Use distutils to locate Python dynamic library instead of ad hoc construction of path that is often wrong.

Commit-type: bug-fix, portability-fix
Reported-by: nightly tests

Remove handling of error code from PetscPClose() since some systems do not reliably return it.

Commit-type: portability-fix

If cannot locate symbols in Python library for petsc4py then print attempted Python library in error message

Commit-type: feature
Thanks-to: Pablo Brubeck <brubeck@protonmail.com>

Merge commit 'd47bf9aaf1e5266cc3f0ff499f934c85788965a9' into jed/fix-matcreatempibaij/maint

Obtain changed (v3.5) handling of MatMPIBAIJSetPreallocationCSR to match
documentation.

Merge branch 'master' into knepley/feature-plex-sphere-mesh

* master: (2633 commits)
Bib: Added ref
SNES ex56: Update test output
add a citation to petsc.bib
Plex: Initialize variables
ini

Merge branch 'master' into knepley/feature-plex-sphere-mesh

* master: (2633 commits)
Bib: Added ref
SNES ex56: Update test output
add a citation to petsc.bib
Plex: Initialize variables
initialize ap as complained by the nightly tests
Plex ex3: Update to new point function API
initialize some variables as complained by nightly tests
SNES ex12: Mix misnaming Nf --> Nc
update tests
add tests
add MatView_SeqXAIJ_ASCII_structonly(); enable A->structure_only in MatSetValuesBlocked_SeqBAIJ
typo
fill-in some references
Bib: Fixed ref
Plex: Added PLY to file support
Plex: Adding PLY support
PetscDS: Turn off Fortran bindings for Constants
Plex tests: Updated to new point function API
SNES ex56: Moved tests to new format
DM: Allow field projection functions to take an array of scalars - This will allow us to pass in user data to kernels without void *, more efficiency than aux fields
...

Conflicts:
config/builder.py
include/petscdmplex.h
src/dm/impls/plex/examples/tests/ex1.c
src/dm/impls/plex/plexcreate.c
src/dm/impls/plex/plexgmsh.c
src/snes/examples/tutorials/ex63.c

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Merge branch 'master' into knepley/feature-plex-pragmatic-parallel

* master: (1379 commits)
Minor fixes for tchem examples due to changes in PETSc infrastructure
update webpage about API changes

Merge branch 'master' into knepley/feature-plex-pragmatic-parallel

* master: (1379 commits)
Minor fixes for tchem examples due to changes in PETSc infrastructure
update webpage about API changes
add help menu for MatCreateSubMatricesMPI()
rename struct Mat_SubMat -> Mat_SubSppt
add a little information to the manual about using tchem
rename MatCreateSubMatrixComposite -> MatCreateSubMatrixVirtual; Mat_SubMatrix -> Mat_SubVirtual
need to protect the \ passed on the makefile on my Mac
Bib: Updated ref
update src/mat/examples/tests/output/ex23_#.out
rename MatGetSubMat -> MatCreateSubMat
Mark MatCreateMPIAIJWithSplitArrays() and MatMPIAIJSetPreallocationCSR() with MAT_NO_OFF_PROC_ENTRIES
superlu: libray is installed in PREFIX/lib64 - fix this to use PREFIX/lib
backport fixes cc105cc3 2b35c90a - required for 3bf428d - that was backported from master - 80c96bb
'echo -n' fails on opensolaris/osx - so avoid using it.
fix diffs in nightlybuilds due to options in ~/.petscrc
add Kelley03 to src/docs/tex/petsc.bib
build: determine moudles, mpi.h used during buildtime and print in 'info'
fix analyzer warnings
fix build failure on opensolaris - where -lm from flibs is removed due to -lm in cxxlibs. But then - only flib gets used for some configure tests [blaslapack, parms]
config: prefer __restrict over C99 restrict keyword
...

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Merge branch 'barry/remove-funct'

Remove the use and definition of __FUNCT__ throughout the code

Since all modern C/C++ compilers provide this functionality we no longer need to provide it manually in PETSc
Time: 1.5 hours
Thanks-t

Remove the use and definition of __FUNCT__ throughout the code

Since all modern C/C++ compilers provide this functionality we no longer need to provide it manually in PETSc
Time: 1.5 hours
Thanks-to: Andreas Mang <andreas@ices.utexas.edu>

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Merge branch 'master' into stefano_zampini/feature-pcbddc-saddlepoint

Conflicts:
src/ksp/pc/impls/bddc/bddc.c
src/ksp/pc/impls/bddc/bddcgraph.c
src/ksp/pc/impls/bddc/bddcprivate.c
src/ksp/pc/imp

Merge branch 'master' into stefano_zampini/feature-pcbddc-saddlepoint

Conflicts:
src/ksp/pc/impls/bddc/bddc.c
src/ksp/pc/impls/bddc/bddcgraph.c
src/ksp/pc/impls/bddc/bddcprivate.c
src/ksp/pc/impls/bddc/bddcscalingbasic.c
src/ksp/pc/impls/bddc/bddcschurs.c
src/mat/impls/is/matis.c

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Merge branch 'master' into barry/add-pcfieldsplit-logevent

Merge branch 'master' into barry/add-pcreset-hypre-for-master

Needed to move PCDestroy_HYPRE() added to master to PCReset_HYPRE() since that was introduced
as a bug fix for maint

Merge branch 'master' into hongzh/checkpointing

Manual merges for a couple of PetscOptions changes in master

Merge remote-tracking branch 'origin/knepley/feature-plex-add-time' into tisaac/dmforest

Both branches changeds DM projection behavior, so I wanted to sort it
out before merging

* origin/knepley/fe

Merge remote-tracking branch 'origin/knepley/feature-plex-add-time' into tisaac/dmforest

Both branches changeds DM projection behavior, so I wanted to sort it
out before merging

* origin/knepley/feature-plex-add-time: (59 commits)
SNES ex69: Updated to new function API, fixed test output
SNES ex75: Fixed for new function API
add fortran stub for TSMonitorLGSetTransform() and fix TSMonitorLG for multiple fields but no names provided for fields
add -binary_write_double so __float128 precision can save as double to binary files
TSClone() did not clone Fortran function pointers hence some TS methods would fail if functions provided in Fortan
petsc4py: update to snapshot with 'barry/petscoptions-object' changes
fix bad merge that introduced 2 copies of the MPI_Comm_free()
update example to use MAT_INPLACE_MATRIX, not REUSE
incorrect addition of float to PetscInt
update for new PetscOptions API
TS ex18: Fixed function API and test output
Function now takes PetscOptions as first argument, this was missed during the first round of updates
bugfix for MatSetOption_Elemental()
fix test example no change output that was missing a line
fixes for new PetscOptions.. API that are needed based on problems with nightly build
Plex ex3: Use new function API
SNES ex62: Use new function API
SNES ex12: Use new function API
Plex: Fixed unused options in examples
Plex+DMDA: Add time to signatures
...

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Merge branch 'master' into pr391/zianekhodja/lilia/tsirm/master

Merge branch 'master' into knepley/feature-plex-add-time

* master: (57 commits)
add fortran stub for TSMonitorLGSetTransform() and fix TSMonitorLG for multiple fields but no names provided for fie

Merge branch 'master' into knepley/feature-plex-add-time

* master: (57 commits)
add fortran stub for TSMonitorLGSetTransform() and fix TSMonitorLG for multiple fields but no names provided for fields
add -binary_write_double so __float128 precision can save as double to binary files
TSClone() did not clone Fortran function pointers hence some TS methods would fail if functions provided in Fortan
petsc4py: update to snapshot with 'barry/petscoptions-object' changes
fix bad merge that introduced 2 copies of the MPI_Comm_free()
update example to use MAT_INPLACE_MATRIX, not REUSE
incorrect addition of float to PetscInt
update for new PetscOptions API
Function now takes PetscOptions as first argument, this was missed during the first round of updates
bugfix for MatSetOption_Elemental()
fix test example no change output that was missing a line
fixes for new PetscOptions.. API that are needed based on problems with nightly build
mark variable as unused so compiler doesn't warn about unused value
configure: use 'git cat-file -e' to check for existance of a commit in localrepo. ['git rev-parse' does not give error for a hash thats not in repo]
petsc4py: revert to manually syncing petsc4py with petsc master changes
configure: revert gitcommit default value to Null. If a pacakge using giturl does not change this value - raise an error
fix: revert change in a44bcdf that breaks with pgf90
update test output for fixed to hypre interface that now actually pass the interp vectors to BoomerAMG
fixes for merge from Jed's branch that should have been merged into master months ago!
Add to changes dev.html file the change to the PetscOptions routines
...

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Merge branch 'master' of bitbucket.org:petsc/petsc

Merge remote-tracking branch 'petsc/master' into moved-partitioning-to-pcgasmsetup

Merge branch 'tisaac/dm-label-promote' into tisaac/dmforest

* tisaac/dm-label-promote: (319 commits)
snes tutorial ex69: give mesh a name for regression purposes
DM: make DMLabel labels a part o

Merge branch 'tisaac/dm-label-promote' into tisaac/dmforest

* tisaac/dm-label-promote: (319 commits)
snes tutorial ex69: give mesh a name for regression purposes
DM: make DMLabel labels a part of all DMs
builder: update regression tests
builder: update some missing package requirements
DM: set coordinate vector name
ts tutorials ex11_sa: make it compile
mark variable as unused so compiler doesn't warn about unused value
configure: use 'git cat-file -e' to check for existance of a commit in localrepo. ['git rev-parse' does not give error for a hash thats not in repo]
petsc4py: revert to manually syncing petsc4py with petsc master changes
configure: revert gitcommit default value to Null. If a pacakge using giturl does not change this value - raise an error
fix: revert change in a44bcdf that breaks with pgf90
update test output for fixed to hypre interface that now actually pass the interp vectors to BoomerAMG
Error message should say use negative threshold value to prevent filtering out zeros
Calls to HYPRE_BoomerAMGSetInterpVectors() did not actually copy the vector data pointer from the PETSc vector to the hypre vector thus resulting in the hypre interp vectors being identically zero and hence not affecting the quality of the AMG hierarchy produced/
DMPlex: Silence overzealous compiler warnings
add row/col orientation to MatConvert_Elemental_Dense
fix formatting error in previous commit [broke nightlybuilds]
fix formating of TSTHETA manual page and add missing command line option
run hwloc with MPIEXEC and binding so it runs on the correct machine
fix: memory leaks [in valgrind test]
...

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Merge branch 'barry/petscoptions-object'

Merge branch 'barry/petscoptions-object' into stefano_zampini/feature-pardiso-schur

Merge branch 'master' into barry-allow-vecset-nan-3.6

Merge branch 'stefano_zampini/feature-pardiso-schur' of https://bitbucket.org/petsc/petsc into stefano_zampini/feature-pardiso-schur

Complete update to new PetscOptions interface

Merge branch 'master' into knepley/fix-examples-plex

* master: (112 commits)
correct expression for implict ODE/DAE in table 11 of users manual
remove warning about deprecated MPI call in exampl

Merge branch 'master' into knepley/fix-examples-plex

* master: (112 commits)
correct expression for implict ODE/DAE in table 11 of users manual
remove warning about deprecated MPI call in examples
rm variables declared in middle of subroutine
tolerance for equality in PETSc test should depend on machine epsilon
tolerance for acccuracy in test example should depend on machine epsilon
increase convergence tolerance to get same result in single precision as double for convergence history
update no change output for gasm test which had not been properly updated
remove C++ // comment
example mistakenly used MPI_COMM_WORLD as if it was rank in print statement thus producing output only with MPI Uni
grep out name of DM object since on some systems the address printed has extra zeros thus producing a false difference in output
increase tolerance for test example
build: revert el6-4 build to cg - as el6 compilers give link errors
fix error type
insure similar convergence history for single, double, quad
fix ex104.c based on Barry's suggestion
increase example convergence tolerance to get matching convergence history in single and double precision
increase convergence tolerance so that test example has similar convergence history in single and double precisions
changed from cg to gmres for eigenestimator since in single precision cg produced a possible indefinite matrix report
change test example tolerance to depend on machine epsilon so as to give correct results in various precisions
loosen convergence tolerance to have similar convergence history with single, double, quad precisions
...

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Merge branch 'master' into shri/add-tsevent-to-powergrid-examples