Fix manual pages based on reports from Jacob's lint tool

Commit-type: documentation

Remove now unneeded SOURCE* variables from makefiles

Commit-type: configure, housekeeping

Remove unneeded SOURCEH from makefiles

No longer used by docs or build

Fix keyval leaks in fretrieve.c

Merge branch 'jczhang/optimize-mpiaijkok-matproduct' into 'main'

Simplify and optimize MatProduct of MPIAIJKOKKOS

See merge request petsc/petsc!6152

Sys: use formal Kokkos version in macros

Add PETSC_PRAGMA_DIAGNOSTIC_IGNORED_BEGIN, and PETSC_PRAGMA_DIAGNOSTIC_IGNORED_END to silence clang or GCC warnings selectively

Fix SLEPc pipelines

Merge branch 'jeremy/less-strcpy-strcat' into 'main'

Use Petsc[Strncpy,Strlcat,Memcpy] over Petsc[Strcpy,Strcat]

Closes #1332

See merge request petsc/petsc!6115

Merge branch 'jacobf/2023-01-11/matdensecupm' into 'main'

Feature: MATDENSECUPM

See merge request petsc/petsc!6049

Clean up PETSc str ops to use more secure implementations where possible. These include:

- Use PetscStrncpy()/PetscStrlcat()/PetscMemcpy() over PetscStrcpy()/PetscStrcat()
- Use PetscArraycpy() over

Clean up PETSc str ops to use more secure implementations where possible. These include:

- Use PetscStrncpy()/PetscStrlcat()/PetscMemcpy() over PetscStrcpy()/PetscStrcat()
- Use PetscArraycpy() over PetscMemcpy() as appropriate for string buffer copying
- Use built in string from name over hardcoding
- Use sizeof over hardcoded length
- Replace some Strlcat with Strncpy when offset is known

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Fix 'format specifies type 'void *' but the argument has type 'PetscDevice' (aka 'struct _n_PetscDevice *') [-Wformat-pedantic]'

Do MatAXPY in a single kernel instead of multiple cublas calls

Do MatScale in a single kernel instead of multiple cublas calls

Add cupmsolverinterface.hpp

Move plus_equals functor to kernels.hpp

Improve compile time by reducing number of thrust headers transitively included, removing all of the unecessary Thrust util indirection

Use designated initializers in CUPMContext and copy ops struct directly instead of using mempcy

Fix strange redefinition errors of global functions

Fix C++20 implicit enum-float conversions

Fix C++20 aggregate initialization 'bugs'

Remove empty preprocessor variables

Add PetscFFlush()

Merge branch 'jolivet/housekeeping' into 'main'

Some more housekeeping

See merge request petsc/petsc!6130

Merge branch 'barry/2023-02-22/rm-locdir' into 'main'

Remove need for hardwired LOCDIR in all makefiles

See merge request petsc/petsc!6113