Remove testlogin_r workaround, since this is patched upstream, and
    fix stdalign test.
    
    Cherry picked from commit 1e18b0de62a902ecf1b179cc7dbca8eac7223526 and
    commit f0047f2d07b1345818fc42b92d59a9881de0e2e1 from F17 branch of
    Fedora.