Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Extracted for OSS/Free changes from Ingo's original patches.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>