mmf: K&R formatting cosmetics

Signed-off-by: Diego Biurrun <diego@biurrun.de>
Merge remote-tracking branch 'qatar/master'

* qatar/master:
  mmf: K&R formatting cosmetics

Conflicts:
	libavformat/mmf.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
lavu/mem.h: fix typo
lavfi/avfilter.h: fix typo
lavfi/avfiltergraph: fix style
Fix configure --help output for some autodetected features.