Fix issue with Fortran interface

.gitlab-ci.yml

CMakeLists.txt

cmake_modules/GenSPMPkgConfig.cmake

cmake_modules/morse_cmake

include/cblas.h

include/spm.h

src/drivers/skitf.f

src/spm.c

src/spm_io.c

src/z_spm.c

src/z_spm_expand.c

src/z_spm_genrhs.c

src/z_spm_laplacian.c

tests/get_options.c

tests/spm_convert_tests.c

tests/spm_dof_expand_tests.c

tests/spm_dof_matvec_tests.c

tests/spm_dof_norm_tests.c

tests/spm_matvec_tests.c

tests/spm_norm_tests.c