realigned files to minimize code differences between Aforge repo and this one
change Exception to InvalidOperationException when CreateFilter returns null for a given deviceMoniker
Reunify code with Aforge.Video.DirectShow r1710
Wip-Reunify code with Aforge.Video.FFmpeg r1710: retarget back to Framework 2.0 and bring in VideoFileSource
Wip-Reunify code with Aforge.Video.FFmpeg r1710: merge changes of AssemblyInfo
incorporated AForge repo r1710 into codebase here.