Use LAV Splitter Source for HTTP streaming.
Fix playlist opening from a URL in some cases.
Add support for RTSP streams through LAV Splitter Source.
Improve parsing of m3u playlist from the Internet.
Add support for UDP streams through LAV Splitter Source.
Add support for RTP streams through LAV Splitter Source.
Update Changelog.
Remove now deprecated UDP and Shoutcast source filters.
Fix handling of HTTP Live Streaming playlist.

Note that this relies directly on the source filter being able to deal with that file (LAV Filters can do that just fine).
Update icl13.diff.
Update VirtualDub to v1.10.4-test11.
Add error messages for buggy VS2012 versions.
FGManager.cpp: fix warning for Lite builds.
Update mpc-hc_vs2012.sln for b7475d72c54f2c98c59cb3263a220db7faf4e464.