added cleanlibga target to remove lib*.a files from libga.a to fix ifort macos build https://github.com/nwchemgit/nwchem/issues/171
added cleanlibga target to remove lib*.a files from libga.a to fix ifort macos build https://github.com/nwchemgit/nwchem/issues/171

rangsimanketkaew/NWChem