Created FrameCapture interface and made DataContentViewerMedia implement it.
Added ServiceProvider annotation so that lookup can be used to gain access
to this implementation. Added support class VideoFrame. Added apache commons
io to corelibs project.xml.
Merge branch 'master' of https://github.com/sleuthkit/autopsy
Merge pull request #151 from tmciver-basis/master

Migration of frame capture to core