Update qmin/qmax values for libx264 presets
Also allow qmin/qmax to go up to 69 (the current max value for libx264). Thiswill have to increase when we add 9/10-bit support.
Enable mbtree by default, and remove it from presets
Originally committed as revision 22671 to svn://svn.ffmpeg.org/ffmpeg/trunk
Add MBtree support for libx264Patch by Erik Slagter
Originally committed as revision 20774 to svn://svn.ffmpeg.org/ffmpeg/trunk
Add some lossless h.264 encoding presets as suggested by Jason
Originally committed as revision 16478 to svn://svn.ffmpeg.org/ffmpeg/trunk