configure: omit 'hetrf','hetri','hetrs' in the test for missing Lapack subroutines

These will always result as missing in the current implementation
(complex subroutines tested as real ones).

petscblaslapack.h: rename LAPACKungqr_ to LAPACKorgqr_

The intention is to be consistent with other subroutines like
LAPACKsyev_ where the 'real' name is used for both the 'real' subroutine
(_syev)

petscblaslapack.h: rename LAPACKungqr_ to LAPACKorgqr_

The intention is to be consistent with other subroutines like
LAPACKsyev_ where the 'real' name is used for both the 'real' subroutine
(_syev) and the 'complex' subroutine (_heev) depending on scalar-type

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remove debug statement

pnetcdf: add fallback URL

test: add MAKE_TEST_NP - that uses fewer parallel jobs for tests [MAKE_NP is used for builds]

Merge branch 'knepley/feature-plex-exodus-update'

* knepley/feature-plex-exodus-update: (22 commits)
this test requires exodus to be built with pnetcdf
Plex ex26: Fix leak and bad merge
Plex+E

Merge branch 'knepley/feature-plex-exodus-update'

* knepley/feature-plex-exodus-update: (22 commits)
this test requires exodus to be built with pnetcdf
Plex ex26: Fix leak and bad merge
Plex+ExodusII: Make all ExodusII calls into PetscStackCall
test: use newer cmake version for exodus
pnetcdf: correctly use flibs
exodus: update pnetcdf dependency - and make netcdf optional on pnetcdf And update exodus tests to use --download-pnetcdf
c89: fix
dmplex/exodus: fix build errors with exodus disabled
Plex: Guard ExodusII use
Plex ex26: Test 18 now working
Plex+ExodusII: Fixed hex27 bug
Plex ex26: Check in meshes
Plex ex26: Update to check ExodusII input and output
Plex+ExodusII: Added ExodusII viewer functions
Plex: For NtoG, we need to zero the output entries
Plex: After creating GtoN map, set useNatural for parallel DM
Plex: DMPlexVecRestoreClosure() now sets the input array to NULL
Plex+Doc: Improve documentation of Closure functions
BuildSystem: Bump ExodusII version
BuildSystem: added pnetcdf required for parallel access to non netcdf4/hdf5 exodus files
...

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openmpi: update to using version 2.1.2

Merge branch 'barry/test-harnes-vec-tests' into balay/test

configure: add check for INFINITY [and look for warnings].

And use this flag in tests - and remove other workarrounds previously added.

pnetcdf: correctly use flibs

exodus: update pnetcdf dependency - and make netcdf optional on pnetcdf
And update exodus tests to use --download-pnetcdf

Insure PETSC_MPICC_SHOW is always defined

Funded-by: P-ECP
Time: .2 hours
Reported-by: Richard Tran Mills <richard.t.mills@intel.com>

Complete benchark example with display of logging communication time for VecScatter

Documented binding options for Intel mpirun

Funded-by: P-ECP
Time: 4

BuildSystem: Bump ExodusII version

Merge branch 'master' into knepley/feature-plex-exodus-update

* master:
petsc4py: update to use latest 3.8 snapshot
petsc4py: update to snapshot that syncs with 276c550
fix warning
Plex ex26

Merge branch 'master' into knepley/feature-plex-exodus-update

* master:
petsc4py: update to use latest 3.8 snapshot
petsc4py: update to snapshot that syncs with 276c550
fix warning
Plex ex26: Protect ExodusII stuff
DM: DMCreateSubDM() field argument should be const
TS ex46: Newlines and some numerical jitter
TS ex45: Newlines and some numerical jitter
TS ex11: Fixed indentation and time step numbering
SNES ex12: Update for DM view changes
Plex tests: Update to new DM output
Plex ex23: Use Nc not dim for vector fields
Plex: Default section now ignores cells hanging off boundary meshes
Plex: Viewer now reports the cell Height
DM: Check IS block size in DMCreateSubDM()
DM: DMCreateSubDM() should take a const array
Plex ex26: Test for FEM dof layout and DMCreateSubDM() Contributed-by: Blaise A Bourdin <bourdin@lsu.edu>

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petsc4py: update to use latest 3.8 snapshot

petsc4py: update to snapshot that syncs with 276c550

BuildSystem: added pnetcdf required for parallel access to non netcdf4/hdf5 exodus files

Plex: enable parallel exodusII functions

Merge branch 'maint'

yaml: add a backup download URL

Merge remote-tracking branch 'origin/barry/fortran-PetscSFBcastBegin'

Merge remote-tracking branch 'origin/balay/configure-cleanup-link-cmd'

tests: add 'PETSC_HAVE_C99' flag - so that 'requires: c99' can be used in the test suite

configure: add mathlib to framework.packages - this way - it is listed in the link line