freshplayerplugin v0.2.2

• implement Flash DRM interface. (Desktop PepperFlash doesn't use it, you need one from ChromeOS.)
• fix malfunctioning nested submenus
• implement file chooser dialog
• fullscreen fixups, stop crashing on Alt-F4
• rework ALSA code, add optional PulseAudio support
• implement screen saver inhibition interface
• use GLX to create GL context, for both GL and GLES
• fix hangs caused by wrong nested message loop handling
• add quiet config option to decrease amount of output
• fix Referer bug