Sync from devel:
    2.8.8-1
    - Update to 2.8.8 (#597735)
    - Use xz tarball (new in 2.8.8)
    - Drop smallfixes, redhat-desktop (remaining part), shm-pixmaps and
        connect-mnemonic patches (all fixed upstream)
    2.8.6-18
    - Mass rebuild with perl-5.12.0