This PR adds automatic indentation using Artistic Style (astyle). The script config/astyle-apply.sh runs the indentation using the configuration file config/astylerc. The script also runs headers in all of the directories that automatically generate internal _hypre_*.h header files. Much of this was borrowed from the MFEM project. A pre-commit git hook was also added.
Renamed 'hypre_*' filenames in 'src/sstruct_ls' and 'utilities/' directories
Fixed AUTOTEST tests that filter on the renamed 'hypre_' files
Co-authored-by: Rob Falgout <rfalgout@llnl.gov>
Changed MPI routines to hypre_MPI routines.
Added hypre_printf, etc. routines.
Added AUTOTEST tests to look for 'int' and 'MPI_' calls.
Added a new approach for the Fortran interface (not implemented everywhere yet).
