configurations, and also clean up usages of HAVE_VISIBILITY_PRAGMA which should really be HAVE_VISIBILITY_ATTRIBUTE r=roc+wolfiR, previous revisions reviewed by bryner Patch by bsmedberg, a=wtc git-svn-id: svn://10.0.0.236/branches/MOZILLA_1_8_BRANCH@188553 18797224-902f-48f8-a5cc-f745e15eee43