ENH: Update CLAPACK remote repository
ENH: Update CLAPACK remote repository

CLAPACK source code is now downloaded from Github. This allows us to patch it if necessary. The build system has been patch to avoid building the tests if BULD_TESTING is turned OFF.

NIRALUser/SPHARM-PDM,bpaniagua/SPHARM-PDM,zarquon42b/SPHARM-PDM,zarquon42b/SPHARM-PDM,NIRALUser/SPHARM-PDM,bpaniagua/SPHARM-PDM,bpaniagua/SPHARM-PDM,NIRALUser/SPHARM-PDM