WINTERMUTE: Use SubLoopingAudio for music w/arbitrary loop points

Should fix #6648 (music not looping correctly in 5MA)
Merge pull request #514 from tobiatesan/fix_audio_loop

WINTERMUTE: Use SubLoopingAudio for music w/arbitrary loop points
UNITY: Call g_type_init only with GLib < 2.36

With GLib >= 2.36 g_type_init() is deprecated and only throws an ugly
warning
TSAGE: R2R - Fix a bug while dealing card #2 during the game
TSAGE: R2R - Fix position of stock pile after the first shuffle
TSAGE: R2R - Some renaming in scene 1337
TSAGE: R2R - Fix card drawing choice when player #2 plays a special card #25
Merge pull request #519 from tobiatesan/sensible_unity

UNITY: Call g_type_init only with GLib < 2.36