lavc: make rc_qsquish a private option of mpegvideo encoders
lavc: make rc_qmod_* into private options of mpegvideo encoders
Merge commit 'a6e4ce9fd50897dc6d9c2ada4b6b8090de7de5bf'

* commit 'a6e4ce9fd50897dc6d9c2ada4b6b8090de7de5bf':
  lavc: make rc_qsquish a private option of mpegvideo encoders

Conflicts:
	libavcodec/avcodec.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '946f95354ba76ef73c9b66889d86ab5fba4fb486'

* commit '946f95354ba76ef73c9b66889d86ab5fba4fb486':
  lavc: make rc_qmod_* into private options of mpegvideo encoders

Merged-by: Michael Niedermayer <michaelni@gmx.at>