remove osxfixup calls, also modified build_visit to removing library mangling

git-svn-id: svn+ssh://portal-auth.nersc.gov/project/projectdirs/visit/svn/visit/trunk/src@21745 18c085ea-50e0-402c-830e-de6fd14e8384
remove mangling flag from main

git-svn-id: svn+ssh://portal-auth.nersc.gov/project/projectdirs/visit/svn/visit/trunk/src@21746 18c085ea-50e0-402c-830e-de6fd14e8384