configure: detect GNU address sanitizer

disable PetscCheckPointer when using a sanitizer

Remove unneeded parentheses

Use NULL or nullptr instead of casted 0

Fixes for clang-tidy

Add length argument to PetscMPIErrorString() to prevent potential array overflow

Add test to loop over MPI error codes. Reveals known bug in MPICH implementation

sys: print PETSC_COMM_WORLD size in error messages

CUDA: rename PETSC_HAVE_CUDA_MIN_ARCH to PETSC_PKG_CUDA_MIN_ARCH

Config: get rid of PETSC_HAVE_OMPI_MAJOR_VERSION and include it in petscpkg_version.h

This requires some changes to user FORTRAN code

Pass PETSC_NULL_XXX_ARRAY when passing a NULL as an argument that is expecting an array
Pass PETSC_NULL_ENUM when argument returns an enum instead of

This requires some changes to user FORTRAN code

Pass PETSC_NULL_XXX_ARRAY when passing a NULL as an argument that is expecting an array
Pass PETSC_NULL_ENUM when argument returns an enum instead of PETSC_NULL_INTEGER
Pass arrays (and not scalar values) when the argument is expecting an array; this means replace, for example, the argument v with [v]
Use PetscObjectIsNull(obj) to check if the object is NULL, instead of obj == PETSC_NULL_XXX

The compiler will now automatically prevent you from using the wrong argument type for the first three bullets above
This will also require an update sowing with the new sowing branch this MR is using.

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Improve default PETSc error message about system