This is not 100% tested, but only compared against similar situations.

* trackID changes for the VLC rtsp server as suggested by Leonardo ... <leonardo_c at libero dot it>.
  - apparently DSS is casesensitive on trackID.

 - added him to THANKS as well.

Bug reported by Alexander Gall

used ones are on the top
* added 5:4 aspect/crop ration for high quality PAL TV out (720x576 display
resolution) and 1280x1024 LCD panels 

* Fix the rtp module to not create broken SDPs. muxed streams are unsupported in RTSP mode. fixes #452
- commented a few fprintf, and changed some to msg_Dbg where possible.
- fixed a couple of spelling errors.
- this module really needs a big cleanup and merging with the other SDP and RTSP code.

with actual system library (seems to fix weird compilation problem with
flac and theora builtins)

(avoids spamming the MBONE with incorrect private streams)

May fix builtins recompilation (theora, flac...)

(this commit obviously breaks binary compatibility - clear your plugins)