DMPlexCreateLabelField: Do not assume label must be visualize for cells only

Merge branch 'stefanozampini/dmplexforest' into 'main'

Updates to DMPLEX and DMFOREST

See merge request petsc/petsc!7217

DMPlexCreateLabelField: support DMFOREST

DMPlexMatGetClosureIndicesRefined: use static initialization

DMPLEX: allow XXXViews to accept NULL as sectiondm

Merge branch 'knepley/fix-plex-highorder-coords' into 'main'

Cleanup coordinate mappings for high order

See merge request petsc/petsc!7207

Plex: Improve high order drawing

Merge branch 'knepley/feature-fault-pc' into 'main'

Plex: Allow section reordering by default

See merge request petsc/petsc!7197

Plex: Allow section reordering by default
- Add DMPlexReorderSectionGetDefault() and DMPlexReorderSectionGetDefault()
- Allow default reordering for sections the can group points
- Bigger blocks gene

Plex: Allow section reordering by default
- Add DMPlexReorderSectionGetDefault() and DMPlexReorderSectionGetDefault()
- Allow default reordering for sections the can group points
- Bigger blocks generate a variable block size description
- Add -dm_plex_reorder_section

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Merge branch 'knepley/fix-plex-lexi-order' into 'main'

Plex: Fix lexicographic closure ordering

See merge request petsc/petsc!7173

Plex: Discontinuous fields do not have unknowns on faces/edges
- Fix tensor ordering to allow discontinuous simplex fields

Merge branch 'jolivet/fix-ubsan' into 'main'

Pacify UBSan

See merge request petsc/petsc!7158

Merge branch 'knepley/fix-plex-create-and-view' into 'main'

Fixes for Plex creation and viewing

See merge request petsc/petsc!7159

DM: Correct misspelling

Sys: add PetscSafePointerPlusOffset() to pacify UBSan

Plex: Fix options processing

Merge branch 'knepley/feature-plex-nonmanifold' into 'main'

Knepley/feature plex nonmanifold

See merge request petsc/petsc!7154

Merge branch 'jed/plex-project-fixes' into 'main'

DM: fix DM for BC projection and quadratic perf bug

See merge request petsc/petsc!7151

Plex: Allow stratification based on cell type

DMPolytopeTypeIsHybrid: factor out of DMPlexGetSimplexOrBoxCells

Merge branch 'stefanozampini/minor' into 'main'

Minor changes

See merge request petsc/petsc!7096

DMPLEX: fix typo

Merge branch 'barry/2023-11-21/fix-thread-safety-petscoptionsgetviewer' into 'main'

Fix PetscOptionsGetViewer() so it works in a thread-safe way

See merge request petsc/petsc!7047

Fix PetscOptionsGetViewer() so it works in a thread-safe way

When PetscOptionsGetViewer() returns, for example, PETSC_VIEWER_STDOUT_SELF the same object is shared
by all threads that call PetscOptio

Fix PetscOptionsGetViewer() so it works in a thread-safe way

When PetscOptionsGetViewer() returns, for example, PETSC_VIEWER_STDOUT_SELF the same object is shared
by all threads that call PetscOptionsGetViewer(). In the previous code PetscObjectReference() and
dereference (via PetscViewerDestroy() where called on the viewer by multiple threads after the viewer
was accessed thus corrupting the object.

This branch introduces a PetscOptionsRestoreViewer() that allows not doing the referencing and dereferencing
on persistant viewers, thus removing the specific race condition above.

Other possible solutions include

Use a lock on each PetscObjectReference/Dereference() just in case they are shared. Could be time consuming so one
could mark each object as either threadshared or independent and only do the locks on threadshared objects. This lowers
the cost but would require more extensive changes to PETSc infrastructure. And I do not know if this shared/not shared model
is what we need in the long run, though it might be.

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Merge branch 'barry/2023-11-24/check-section-chart' into 'main'

Add PetscCheck() for some rstart <= rend

See merge request petsc/petsc!7050