Fix audio device list problem reported by Pujan Srivastava on dev (subject: Device List problem, July 8, 2010). Fix empty space in audio and video config forms.
Add some cleanups on unregistering jabber provider and remove some possible mem leaks.
Fix audio device list problem reported by Pujan Srivastava on dev (subject: Device List problem, July 8, 2010).
Fix some NPEs in jabber provider and fixing build.