Patched mp4v2 in mpeg4ip to make the "matrix" property of the tkhd atom in an mp4...

Patched mp4v2 in mpeg4ip to make the "matrix" property of the tkhd atom in an mp4 container not be protected.  (it's stored in the "reserved3" property of the tkhd atom).

Added some new code to muxmp4.c to check for a job->pixel_ratio, and set the tkhd matrix to scale the width up by the right amount where one exists.  This means that QuickTime now honours our anamorphic scaling!

Updated a small error in deca52.c which wasn't critical, but was causing an error when compiling

git-svn-id: svn://svn.handbrake.fr/HandBrake/branches/0.8.0_beta2_5.1@353 b64f7644-9d1e-0410-96f1-a4d463321fa5