vlcshell.cpp: improved FireFox/OSX support 

* GCC 2.x patch by Cian Duffy <myob87@gmail.com>. BTW. This method should return something but doesn't, so someone with more knowledge of this part might want to have a look at it ;)

- javascript fixes

* avoid the error on sub-original-fps

Reenable channel selection for mono: -1 = stereo mix of both channels, 0 = left channel, 1 = right channel, etc.

* Add application icon
* Make interface a bit smaller in Windows
* Fix messages encoding and add header

simple_preferences.cpp: Audio simple preferences category

 * preferences_widgets.cpp: implement string and int with choice list
 * other: simple prefs subtitles dialog

npmac.cpp: OSX Intel patch by Charles Duffy
vlcshell.cpp: fixed X11

Fix regression from 0.8.5 when parsing microsoft [Reference] type playlists. We need to check that nothing else was forgoten in the old playlist code.

* The debug output from a v4l2 capable webcam with this would help...

- added a couple of support APIs in libvlc
- retired XPCOM interface, all scripting now goes through NPObject apis
- new APIs using libvlc (roughly similar to java bindings)