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)

Start some simple prefs panels. Different kinds of layouts used (ie audio vs video panel). This will have to be standardized (i beleive that the video panel is better).