Fix MPI_LONG to MPIU_FORTRANADDR

Commit-type: bug-fix
Reported-by: Jed Brown <jed@jedbrown.org>

F90Array routines now take a MPI_Datatype argument instead of PetscDataType

This is part of the refactorization to limit and maybe eventually eliminate PetscDataType since
it duplicates MPI_Datatype

F90Array routines now take a MPI_Datatype argument instead of PetscDataType

This is part of the refactorization to limit and maybe eventually eliminate PetscDataType since
it duplicates MPI_Datatype functionality (poorly).

Commit-type: style-fix
Thanks-to: Jed Brown <jed@jedbrown.org>

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Fixed compiler warnings when using MPIUNI, optimized build.

Reported-by: Jose E. Roman <jroman@dsic.upv.es>

VecScatter: More rigorous checking for integer overflows.

Merged in dalcinl/fix-mpiuni (pull request #751)

MPIUNI: Various fixes and enhancements

doc: fixes

PetscSF: Additional fixes for MPIUNI

* Configure define HAVE_MPI_TYPE_DUP and HAVE_MPI_TYPE_GET_ENVELOPE.
* Fallback for MPI_Type_dup() now uses MPI_Type_contiguous().

MPIUNI: Various fixes and enhancements

* Rework hackery to prevent compiler warnings from unused vars.
* Fix MPI_Type_{lg|ub|extent|get_extent}().
* Define MPI_SIGNED_CHAR, MPI_LONG_LONG_INT.
* Defi

MPIUNI: Various fixes and enhancements

* Rework hackery to prevent compiler warnings from unused vars.
* Fix MPI_Type_{lg|ub|extent|get_extent}().
* Define MPI_SIGNED_CHAR, MPI_LONG_LONG_INT.
* Define MPI_DOUBLE_COMPLEX, MPI_C_FLOAT_COMPLEX.
* Add a few missing integer constants.
* Define all MPI handle types as typedef of int.
* Always return MPI_SUCCESS/MPI_FAILURE in C code.

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build: fix compile warnings with VS6

Fixes for `ISSortRemoveDups()`

* Add `PetscSortedRemoveDupsInt()` to remove duplicates of a sorted array.
* Calling `ISSort()` and next `ISSortRemoveDups()` now filters duplicates.
* Fix `ISGENERAL`

Fixes for `ISSortRemoveDups()`

* Add `PetscSortedRemoveDupsInt()` to remove duplicates of a sorted array.
* Calling `ISSort()` and next `ISSortRemoveDups()` now filters duplicates.
* Fix `ISGENERAL` to setup the `PetscLayout` after filtering duplicates.

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Merge remote-tracking branch 'origin/tisaac/fix-complex-tagger'

Fix string length of registered PetscClassIdRegister("Star Forest Graph", so that it does not mess up
formatting in PetscLogView()

Commit-type: style-fix

VecTagger: fix last commit

VecTagger: remove unnecessary #ifdef branching

Merge remote-tracking branch 'origin/balay/fix-with-cuda'

fix: cublasIcamax() expects int - not PetscInt
build: --download-suitesparse -download-suitesparse-gpu --with-cuda --with-64-bit-indices

Merge branch 'jed/sf-shared-uni'

* jed/sf-shared-uni:
SF: protect call to MPI_Group_translate_ranks for an empty group

SF: protect call to MPI_Group_translate_ranks for an empty group

This is a workaround for MSMPI which fails when passed a NULL array and
no ranks to translate.

Thanks-to: Satish Balay <balay@mcs.an

SF: protect call to MPI_Group_translate_ranks for an empty group

This is a workaround for MSMPI which fails when passed a NULL array and
no ranks to translate.

Thanks-to: Satish Balay <balay@mcs.anl.gov>

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Merge branch 'pr687/Joel-Venzke/fix-hdf5-chunck-size/master'

* pr687/Joel-Venzke/fix-hdf5-chunck-size/master:
Ensures that hdf5 chunks are less than 4gb.

HDF5: Fixed missing cast in ex10

HDF5: Now checking read vector in vec/examples/tutorials/ex10.c

This is used to test correct functionality of chunking.

HDF5 viewer: Polishing towards coding guidelines.

Consistent use of:
- PetscSqrtReal()
- appropriate type casts
- No direct use of INT_MAX

Remove C99 construct from example that prevented compiling

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

SFBasic: circumvent send-to-self by marking self as a distinguished group

The distinguished group is currently only self, but will later be the
group of a shared memory communicator. The leaf buffe

SFBasic: circumvent send-to-self by marking self as a distinguished group

The distinguished group is currently only self, but will later be the
group of a shared memory communicator. The leaf buffers for
distinguished ranks are pointers directly into root buffers; MPI is not
needed. When distinguished ranks are on different processes, we will
need a weaker synchronization mechanism to ensure memory ordering.

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PetscSFView: dynamically sort by ranks for ASCII_INFO_DETAIL output