try to get xlc flags from ibmcxx.cfg use conditional for X use readline cf macro
try to get xlc flags from ibmcxx.cfg
use conditional for X
use readline cf macro


git-svn-id: 193148810cf65385f3a195dbc9a8b504846da3a2@8688 ec53bebd-3082-4978-b11e-865c3cabbd6b

madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal