Implements an alternative to PortAudio on Windows which uses Windows Audio Session API (WASAPI) and related Core Audio APIs such as Multimedia Device (MMDevice) API.

Displays a pop-up notification about the removal of an audio device only if it used to be the active/selected one.

Modifies automatic audio device selection to attempt to pick up capture and playback/notify from the same hardware. Fixes warnings. Adds javadocs.

Adds the device name and its state (connected or disconnected) for the "Device configuration has changed" pop-up notification. Adds a "New selected device" pop-up notification when the selected audio device has changed (for audio in, audio out and notifications).

- Fixes spelling mistakes.
- Fixes warnings.

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.