Log Message:
Update to 0.14.15:

v0.14.15 (2014-12-29)
======================
	-- fix VP9 decoding support
	-- fix full-window update heuristics
	-- fix library linking order (preserve pkg-config order)
	-- fix windows that iconify programmatically
	-- fix dialog windows wrongly shown as override redirect
	-- fix border paint mode with OpenGL
	-- fix maximize / unmaxmize and fullscreen state synchronization
	-- fix window WM_STATE property handling (Java applications)
	-- add missing "dbus-proxy" option