[x264/f24] (6 commits) ...rework asm treatment on i686 and ppc64

[Dominik Mierzejewski]

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