ffmpeg: added support to test with/without static version of LAME.
ffmpeg: added support to test with/without static version of LAME.

FelixZhang00/rudix,FelixZhang00/rudix,FelixZhang00/rudix,FelixZhang00/rudix,rudix-mac/rudix,rudix-mac/rudix,rudix-mac/rudix