Plex: Removed extra semicolon

Plex ex15: Switched to simple partitioning

Tests: Turned off some tests that do not very in single precision

PetscPartitioner: use simple partitioning for regression tests

Because the partitioner by default depends on those packages available, we need to use
the always-available simple in regression tests

Plex: Fixed cylinder tests

DMPlexCreateHexBoxMesh: no cells in z direction for 2D

Merge remote-tracking branch 'origin/knepley/feature-plex-torus' into tisaac/feature-fe-dual-apply

* origin/knepley/feature-plex-torus:
Plex: Cylinder fixes for complex
Plex ex1: Test for period

Merge remote-tracking branch 'origin/knepley/feature-plex-torus' into tisaac/feature-fe-dual-apply

* origin/knepley/feature-plex-torus:
Plex: Cylinder fixes for complex
Plex ex1: Test for periodic cylinder
Plex: I think periodic cylinder is working
Plex ex1: Updated torus test
Plex: Torus can now be arbitrarily refined
Plex ex1: Added a cylinder test
Plex: Added cylinder mesh
Plex: Some cleanup with mesh generation

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Plex: Fixes creation of hex box meshes and added tests

Plex: helper function used in all cases now

Plex tests ex7: make partitions portable for testing

Plex: use MPIU_2INT instead of MPI_2INT

Plex: Choose correct dual space for sub meshes

MatAIJ KLU: remove redefinition of SuiteSparse_long

SuiteSparse_config.h has it's own logic for determining what SuiteSparse_long should be,
and provides a mechanism for overriding it, but that shou

MatAIJ KLU: remove redefinition of SuiteSparse_long

SuiteSparse_config.h has it's own logic for determining what SuiteSparse_long should be,
and provides a mechanism for overriding it, but that should be done at configure time,
not in a source file. Dictating causes compliance errors, even when
is the same size.

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DMPlexRefine_CTetgen() mimics DMPlexRefine_Tetgen()

DMPlexGenerate_Tetgen(): mimic ctetgen so it can be used equivalently

Plex: Cylinder fixes for complex

Plex ex1: Test for periodic cylinder

Plex: I think periodic cylinder is working

Plex ex1: Updated torus test

Plex: Torus can now be arbitrarily refined

DMPlexGenerate: use Tetgen if it's available

c++ fixes

Plex tests ex3: make num_comp default to dim

other wise running the program without options fails, which isn't a good look.

Merge branch 'tisaac/fix-pipeline-tests' into tisaac/feature-fe-dual-apply

* tisaac/fix-pipeline-tests:
mpiuni: disable tests that don't work with mpiuni
Various tests complex scalar fixes
Ple

Merge branch 'tisaac/fix-pipeline-tests' into tisaac/feature-fe-dual-apply

* tisaac/fix-pipeline-tests:
mpiuni: disable tests that don't work with mpiuni
Various tests complex scalar fixes
Plex tests ex10: 64bit indices fix
Plex tests ex4: fix for c++ bools
PetscHash: correct test for 64 bit indices use
proper manual pages for PetscObjectXXXOptionsPrefix()

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CGNS: compatibility updates

- if configuring with hdf5, try using the discovered libs for cgns
- use namespace macros if they are present in cgnslib.h
- also undefine I in cgns example ex2.c