checkbadSource: enforce proper style in makefiles

Fix -Wshorten-64-to-32

petsc/src/sys/utils/openmp/mpmpishm.c:227:88: warning: implicit conversion loses integer precision: 'PetscInt' (aka 'long') to 'int' [-Wshorten-64-to-32]
227 | PetscCallMP

Fix -Wshorten-64-to-32

petsc/src/sys/utils/openmp/mpmpishm.c:227:88: warning: implicit conversion loses integer precision: 'PetscInt' (aka 'long') to 'int' [-Wshorten-64-to-32]
227 | PetscCallMPI(MPI_Reduce(ctrl->is_omp_master ? MPI_IN_PLACE : cpu_ulongs, cpu_ulongs, nr_cpu_ulongs, MPI_UNSIGNED_LONG, MPI_BOR, 0, ctrl->omp_comm));
| ~~~~~~~~~~ ^~~~~~~~~~~~~

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Fortran 90: fully embrace After 34 years!

- deprecate use of 'F90' in Fortran function names
- use Fortran pointers when appropriate
- the new Fortran API is not backward compatible with previous ve

Fortran 90: fully embrace After 34 years!

- deprecate use of 'F90' in Fortran function names
- use Fortran pointers when appropriate
- the new Fortran API is not backward compatible with previous versions!
- also clean up inconsistent PETSc code detected by new Fortran generation tools
- drop use of bfort
- automatically generate all the Fortran PETSc objects, enums etc from the include files
- generate most of the Fortran interface definitions and functions from the source code
- simplify the number and organization of Fortran modules

Co-authored-by: Jose E. Roman <jroman@dsic.upv.es>

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