Add user agent to DLAGENTS to fix source download issue (Error 406)

git-svn-id: file:///srv/repos/svn-community/svn@117478 9fca08f4-af9d-4005-b8df-a31f2cc04f65
archrelease: copy trunk to community-i686

git-svn-id: file:///srv/repos/svn-community/svn@117479 9fca08f4-af9d-4005-b8df-a31f2cc04f65
archrelease: copy trunk to community-x86_64

git-svn-id: file:///srv/repos/svn-community/svn@117480 9fca08f4-af9d-4005-b8df-a31f2cc04f65