Log Message:
Update to 0.15.3:

v0.15.3 (2015-07-07)
======================
	-- fix invalid X11 atom
	-- fix unhandled failure code from libav
	-- fix default socket permissions when config file is missing
	-- fix error handling for missing cuda kernels
	-- fix OpenGL paint early errors
	-- fix "print" control command with multiple clients
	-- skip sending invalid packet to client for the "name" control command
	-- more helpful dpi warning
	-- support connecting to named unix domain sockets
	-- OpenGL option can force enable despite platform checks
	-- replace unsafe deprecated API call in HTML5 client
	-- more reliable and clean shutdown of connections and threads
	-- log internal system failures as errors