support omiting various headers in mpeg4 as WMP seems to have difficulty with them

based upon 27_WMP_compatibility_with_ISOMPEG4.patch by (Calcium | calcium nurs or jp)
  indention fixed
  uses workaround_bugs instead of strict_std_compliancy as WMP is not the reference implementation

Originally committed as revision 4069 to svn://svn.ffmpeg.org/ffmpeg/trunk