Activates update for reloadable audio systems in order to activate them if the number of devices changes from 0 to something greater.

Changes needed for android merge. Exposing several bundle contexts. Some public constants. Changes in sound notifications to use String as resource uri, and obtaining resource input stream and stream format info from AudioSystem, so it can be overridden in different implementations.

Moves Constants to the serivce package so that it would be accessible for other packages that need to access a PT name

Improves device selection via portaudio for MacOSX (hostapi coreaudio): adds the possibility to get the device transport type (USB, bluetooth, etc.) and an unique identifier. Corrects problems when: loading the same device twice (for the moment only for the same hostapi), a new plugged device is selected during a call or if the selected device is unchanged.

Improves sound device selection: automatically switches to new plugged device, remember user preferences in a list.

Fixes a failure to keep the aspect ratio of the video when switching to full screen. Attempts to remedy a multi-video display when switching between camera and desktop streaming. Tries to fix a crash in the QTKit video capture on Mac OS X. Works on addressing a unnecessary remaining of the camera on Mac OS X open.

Commits an initial version of the libjitsi library which should be fully functional with respect to neomedia/MediaService and should be usable with and without OSGi.