upgpkg: gcc-multilib 4.9.2-1

upstream update, build isl and cloog in tree

git-svn-id: file:///srv/repos/svn-community/svn@121740 9fca08f4-af9d-4005-b8df-a31f2cc04f65
archrelease: copy trunk to multilib-staging-x86_64

git-svn-id: file:///srv/repos/svn-community/svn@121741 9fca08f4-af9d-4005-b8df-a31f2cc04f65