ext/ffmpeg/gstffmpegenc.c: MPEG4 standard does not accept framerates with a denominator greater than (1<<16 - 1) (acc...

Original commit message from CVS:
* ext/ffmpeg/gstffmpegenc.c: (gst_ffmpegenc_getcaps),
(gst_ffmpegenc_setcaps), (gst_ffmpegenc_register):
MPEG4 standard does not accept framerates with a denominator greater
than (1<<16 - 1) (according to the ffmpeg encoder...).
We therefore scale down the framerate.
Small indentation fixes using gst-indent.