MATIS: deprecate MatISGetMPIXAIJ in favour of MatConvert()

Updated code and tests

Merge remote-tracking branch 'origin/stefano_zampini/feature-ptatin3d-support'

PCBDDC: use corners only if present (ptatin support)

PCBDDC: added command line option to filter small entries when detecting disconnected subdomains (damn dolfin)

PCBDDC: use new API ISLocalToGlobalMappingGetNodeInfo

PCBDDC: added command line option to visualize the coarse matrix

Merge branch 'master' into knepley/fix-plex-project-tests

* master: (477 commits)
Added correct report number for PETSc Developers Guide
Update PETSc Developers Guide title and final pages to ne

Merge branch 'master' into knepley/fix-plex-project-tests

* master: (477 commits)
Added correct report number for PETSc Developers Guide
Update PETSc Developers Guide title and final pages to new ANL style
Hash: Quick documentation fix
PetscBinaryViewerRead -> PetscViewerBinaryRead
cast in GAMG_HASH so that it works for PetscInt32 near PETSC_INT_MAX without overflow to negative numbers
Add link for DrMemory which may serve as an alternative to valgrind on Windows
Finish Gail's copyedits for developers manual.
openmpi: fix namespace conflict [with static build on ppc64le]
two pages of Gail's edits to developers guide
Another chapter of Gail's copyedits for the developers guide
Gail's copyedits on two more chapters of the developers guide
Fix more %d to %D in GAMG code. Fix code style in GAMG code
DMPlexVTK: vertices is int! need to use %d instead of %D
TS ex18: update outputs (reported by nightly tests)
Use %D in error messages for GAMG hash; fix style issues with GAMG hash
config: Update petsc4py git commit
Fix bad plain extern declaration.
Add Gail's copyedits for the initial portion of the developers guide
Add missing common block to subroutine
fix mpiuni tests with xl compilers
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Merge branch 'master' into knepley/feature-pc-patch

* master: (107 commits)
cast in GAMG_HASH so that it works for PetscInt32 near PETSC_INT_MAX without overflow to negative numbers
Add link for

Merge branch 'master' into knepley/feature-pc-patch

* master: (107 commits)
cast in GAMG_HASH so that it works for PetscInt32 near PETSC_INT_MAX without overflow to negative numbers
Add link for DrMemory which may serve as an alternative to valgrind on Windows
Finish Gail's copyedits for developers manual.
openmpi: fix namespace conflict [with static build on ppc64le]
two pages of Gail's edits to developers guide
Another chapter of Gail's copyedits for the developers guide
Gail's copyedits on two more chapters of the developers guide
Fix more %d to %D in GAMG code. Fix code style in GAMG code
DMPlexVTK: vertices is int! need to use %d instead of %D
TS ex18: update outputs (reported by nightly tests)
Use %D in error messages for GAMG hash; fix style issues with GAMG hash
config: Update petsc4py git commit
Fix bad plain extern declaration.
Add Gail's copyedits for the initial portion of the developers guide
Add missing common block to subroutine
fix mpiuni tests with xl compilers
Copy & paste the change on PetscSparseDensePlusDot
Fix a wrong macro
PetscInfo: Add missing errorchecking
Log: various fixes and cleanups
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Conflicts:
src/dm/impls/plex/plex.c

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Merge branch 'maint'

PCBDDC: fixes for the benign subspace technique

- Fix incorrect flagging of benign subdomains
- Keep recurring on coarse solver only until we have benign subs
If we no longer have benign subs, we

PCBDDC: fixes for the benign subspace technique

- Fix incorrect flagging of benign subdomains
- Keep recurring on coarse solver only until we have benign subs
If we no longer have benign subs, we need a full bddc application (recursion is still possible)

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Merge branch 'master' into knepley/feature-snes-ex13-spectral

* master: (2350 commits)
migrate warning fix from next-tmp
Revert "Remove dead code."
clarifying comment in the code
Remove dead

Merge branch 'master' into knepley/feature-snes-ex13-spectral

* master: (2350 commits)
migrate warning fix from next-tmp
Revert "Remove dead code."
clarifying comment in the code
Remove dead code.
Add JuMP citation
Copyedits and updates to developers manual
Add more protection to intrinsics
MPI: protect arguments in MPI macros
Add the missing conditionals for 64-bit build
Plex+VTK: Fix field type determination
Fix bug in name cleanup
Bib: Added ref
Plex+VTK: Fix field type determination
Plex: Updated test output - I am now hating this shit
forgot to save file after moving prototypes to petscsys.h
update Apple example project settings per Xcode
Two functions should actually be public, used, for example from Apple MacOS and iOS programs
includes should always be included relative to include directory
Apple removed old locations of docsets
SNES ex12: Updated test output
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Conflicts:
src/snes/examples/tutorials/ex13.c

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Merge branch 'master' into knepley/feature-pc-patch

* master: (440 commits)
revert sources to dev - reset PETSC_VERSION_RELEASE - reset changes/dev.html
release: set v3.9 strings
fix grep us

Merge branch 'master' into knepley/feature-pc-patch

* master: (440 commits)
revert sources to dev - reset PETSC_VERSION_RELEASE - reset changes/dev.html
release: set v3.9 strings
fix grep usage on solaris [use egrep]
opensolaris: fix errors
Update timer reporting and minor reporting fix
Remove redundant if statement. Found by @jedbrown
Fixed problem with order of developer photos on website.
superlu_dist: use correct flag in example [PETSC_HAVE_SUPERLU -> PETSC_HAVE_SUPERLU_DIST]
Bib: PERMON ref
fix for osx
doc: more author fixes
doc: more author fixes
Italicized "orderings" in MPI process placement discussion.
Added Richard to the user manual author list.
Added Richard to the list of active developers on the website.
add string check for MS-MPI and IMPI timeout errors
opensolaris does not have multiple grep utils - but default one does not support -F. So use fgrep instead
Standardizing timeout checks
Report wall clock time of total tests
Use time instead of date %s
...

Conflicts:
include/petscpc.h
src/ksp/ksp/interface/itfunc.c

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Deprecate DMSet/GetDefaultSection() for DMSet/GetSection()

Revert manual page change per Matt's preference

Commit-type: style-fix
Thanks-to: Matthew Knepley

Merge branch 'stefano_zampini/fix-matis-dmda-l2g'

Merge remote-tracking branch 'origin/knepley/fix-snes-ex69' into tisaac/feature-dmfield

* origin/knepley/fix-snes-ex69: (311 commits)
PetscFECreateDefault: fix custom Fortran interface to use MPI_

Merge remote-tracking branch 'origin/knepley/fix-snes-ex69' into tisaac/feature-dmfield

* origin/knepley/fix-snes-ex69: (311 commits)
PetscFECreateDefault: fix custom Fortran interface to use MPI_Comm
SNES ex69: Updated test output
SNES ex69: Removed all mantle stuff and change fields to constants - Also use dsymutil for executables
SNES ex69: Removed special partition
SNES ex69: Fixed null space creation - Null space locks its vectors
PetscFE: PetscFECreateDefault() now takes MPI_Comm instead of DM
cleanup very ugly PCGAMG manual page
minor clarifications for VecScatterCreate() manual page
gcov: PETSC_ARCH is required onlyfor -run_gcov - and not for -merge_gcov [where it doesn't exist]
make clearer in help statements what --with-external-packages-dir is for.
Website: Added news entry for PETSc User Meeting 2018 on main page.
CUDA: Further test output fixes for mat_tests-ex2
Turn off elemental test for parmetis running since this does not work on batch systems.
3.8 Changes: KSPCHEBYSHEV
CUDA: Fixed most test errors due to MatMultTranspose*
website: update urls
website: fix Jason's name to match pic. Also add Todd's pic
Dev manual: copyedit
DMPlexDistributeLabels: Propagate the output flag
cuda/cusp: update minimum supported versions of cuda to 7.5 and cusp to 0.5.0
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PCBDDC: yet another recipe

Same as before, but save one factorization

Merge branch 'barry/refactor-petscstrncat'

Change PetscStrncat() to PetscStrlcat() to match BSD API where l represents total length

Update many uses of PetscStrcpy() and PetscStrcat() to the safer PetscStrncpy() and PetscStrlcat()

Commit-ty

Change PetscStrncat() to PetscStrlcat() to match BSD API where l represents total length

Update many uses of PetscStrcpy() and PetscStrcat() to the safer PetscStrncpy() and PetscStrlcat()

Commit-type: style-fix, feature
Thanks-to: Jed Brown

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PCBDDC: another recipe, this looks very promising

PCBDDC: added a couple of more recipes for Stokes

initialize B_neigs to 0 and revert order of eigenvalue computation for recipe 2

PCBDDC: return if maxneighs = 0

PCBDDC: cosmetic fixes

PCBDDC: added cc-based corner selection when coordinates are available

PCBDDC: use nearnullspace in alternative and pass it to the local solvers

Remove KSPSetUp call for local solvers that may prevent to properly setup approximate local solvers

PCBDDC: implement stabilized gram-schmidt for orthonormalization