HDF5: Improve timestepping.

* add PetscViewerHDF5{Push,Pop,Is}Timestepping to control timestepping mode
* write timestepping attribute for datasets and check it on reading
* fail gracefully if tryin

HDF5: Improve timestepping.

* add PetscViewerHDF5{Push,Pop,Is}Timestepping to control timestepping mode
* write timestepping attribute for datasets and check it on reading
* fail gracefully if trying to read non-timestepped dataset in timestepping mode and vice-versa (fix #425)
* rewrite src/vec/vec/tutorials/ex19.c to improve coverage for timestepping testing

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All MPIU_ functions except MPIU_File return MPI error codes for checking

Update checkbadSource to find use of CHKERRQ with MPIU_ functions

Commit-type: i.e. error-checking, optimization, bug-fix, p

All MPIU_ functions except MPIU_File return MPI error codes for checking

Update checkbadSource to find use of CHKERRQ with MPIU_ functions

Commit-type: i.e. error-checking, optimization, bug-fix, portability-fix, testing-fix, style-fix, feature, documentation, example
Funded-by:
Project:
Time: hours
Reported-by:
Thanks-to:
Development Tools: Vim, Emacs, Eclipse

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Merge remote-tracking branch 'origin/jczhang/add-DMDAVecGetKokkosOffsetView'

Add DMDAVecGetKokkosOffsetView and friends

See merge request petsc/petsc!3383

DMPLEX: fix GLVIS regression with mfem > 4.2

Add DMDAVecGetKokkosOffsetView and friends

Fix wrong usage of PetscDefined()

CHKERRQ() -> CHKERRMPI()

Fix more warnings in PGI compiler with complex scalars

Convert MPI error type to PETSc error with string message for all MPI calls

Now PETSc examples will ONLY return PETSc error codes and never MPI error codes directly so we can understand and post-pro

Convert MPI error type to PETSc error with string message for all MPI calls

Now PETSc examples will ONLY return PETSc error codes and never MPI error codes directly so we can understand and post-process their
errors better.

The test harness will now automatically retry tests that fail with MPI, this may help with Intel MPI that produces
seemingly random failures.

Commit-type: error-checking
/spend 30m

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