Update a52dec to version 0.8.0 / rev 4 via SR 1102195
    
    https://build.opensuse.org/request/show/1102195
    by user alarrosa + dimstar_suse
    - Minor spec cleaning, use ldconfig_scriptlets macro, be more
      explicit in listing of files (use less globs).
    
    - Update to release 0.8.0
      * Build system modernization
    - Drop altivec.patch (inapplicable)
    
    - Remove obsolete Groups tag (fate#326485)