[mythtv] Unused files in libavcodec dir

[rob]

Here's a list of files that aren't compiled in the libavcodec directory. 
  Should they be removed from the distribution?

ac3dec.c
apiexample.c
avcodec.c
dct-test.c
fdctref.c
fft-test.c
motion_test.c
mp3lameaudio.c
oggvorbis.c


Also, it seems like the other codecs from libavcodec (h263i, etc) work 
when you set them in settings.txt.  How useful are they to keep in 
there?  If the data format is already non-standard for the recorded 
video files, and everybody uses either mpeg4 or rtjpeg, it doesn't seem 
like that code will ever be used.  If it's never used, it should be 
removed from the distribution.