Make query searching case insensitive
For all queries except for "name" queries (which goes by file and directory name), make the search case insensitive. So now these all give the same answer:
make -f gmakefile print-test q='requires' qv='*superlu_dist*'
make -f gmakefile print-test q='requires' qv='*SuperLU_DIST*'
make -f gmakefile print-test q='requires' qv='*HAVE_MPI_PROCESS_SHARED_MEMORY*'
make -f gmakefile print-test q='requires' qv='*have_mpi_process_shared_memory*'
Since might have unintended consequences for developers, I'd rather merge it into main so we get feedback before a release.