break out original globus-gram-client.spec from epel (SOFTWARE-1724)

we want to continue using the epel-flavor spec when we update to
globus-gram-client 12.5, which never hit epel.

also bring in GLOBUS-GRAM5 from the epel srpm, which is needed for the
build.

git-svn-id: file:///p/condor/workspaces/vdt/svn/native/redhat/trunk/globus-gram-client@20331 4e558342-562e-0410-864c-e07659590f8c
Update to globus-gram-client 12.5 (SOFTWARE-1724)

git-svn-id: file:///p/condor/workspaces/vdt/svn/native/redhat/trunk/globus-gram-client@20332 4e558342-562e-0410-864c-e07659590f8c
update README

git-svn-id: file:///p/condor/workspaces/vdt/svn/native/redhat/trunk/globus-gram-client@20333 4e558342-562e-0410-864c-e07659590f8c