Merge branch 'barry/2026-02-14/fix-defined-missing-braces' into 'main'

Fix the inconsistent usage of #if defined XXX compared to defined(XXX)

See merge request petsc/petsc!9040

Fix the inconsistent usage of #if [!]defined XXX compared to defined(XXX)

Thanks-to: Pierre Jolivet

An LLM Claude detected the incosnsitency it was not used to remove the inconsistency

Merge branch 'jrwrigh/cgns_bc_writing' into 'main'

Plex: CGNS files write and read boundary conditions and face label information

See merge request petsc/petsc!8934

test(cgns): Test CGNS read/write BC info

migrate 2x2x2_Q3_wave.cgns to datafiles repo

Merge branch 'barry/2026-01-13/ftn-generation-for-context-functions' into 'main'

Fortran generation of interface definitions for functions that take and return context variables (void *ctx and PetC

Merge branch 'barry/2026-01-13/ftn-generation-for-context-functions' into 'main'

Fortran generation of interface definitions for functions that take and return context variables (void *ctx and PetCtx ctx)

See merge request petsc/petsc!8956

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Add automatic generated fortran support for setting and returning contexts

Major cleanup of the code for setting and returning application (previously called user) contexts
- PetscCtx ctx is now t

Add automatic generated fortran support for setting and returning contexts

Major cleanup of the code for setting and returning application (previously called user) contexts
- PetscCtx ctx is now the standard for passing in contexts
- PetscCtxRt ctx is the standard for passing out contexts, including context destroy routines based on PetscCtxDestroyFn

Both of these are typedef to void*

Also removed most use of user and userctx for context arguments now consistently named ctx

Improved documentation on PetscCtx and PetscCtxRt and on how to use contexts (including getting them) from Fortran

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Merge branch 'jolivet/forbidden-empty-output-files' into 'main'

checkbadSource: forbid empty output_file not named output/empty.out

See merge request petsc/petsc!8588

checkbadSource: forbid empty output_file not named output/empty.out

Merge branch 'jrwrigh/isoperiodic_sf_natural' into 'main'

isoperiodic: Correct sfNatural during reorientation

See merge request petsc/petsc!8001

isoperiodic: Correct sfNatural after reorienting

Merge branch 'jrwrigh/box_label_periodic_orient' into 'main'

Isoperiodic automatically handles cone orientations

See merge request petsc/petsc!7992

plex: Isoperiodic fixes cone orientations automatically