[x264/f25] (6 commits) ...rework asm treatment on i686 and ppc64

Summary of changes: 99c333a... Revert "Update x264 to 0.148-20160412-fd2c324" (*) ab1a9f4... Update sources (*) ffe4b8a... Revert "Update sources" (*) ac69c20... Revert "Revert "Update x264 to 0.148-20160412-fd2c324"" (*) db25abd... Merge branch 'f23' (*) 2448535... rework asm treatment on i686 and ppc64 (*) (*) This commit already existed in another branch; no separate mail sent