Text effect strip for sequencer.

Is pretty much what it says :)
Easy subtitles for everyone!

Supports size, positioning,
a cheap shadow effect (probably will need more work),
and autocentering on x axis.

Now you can go wild with long spanish names
in your soap opera videos.

Will probably be refined as days go by,
but at least it's now ready for testing.

source/blender/gpu/intern/gpu_debug.c

@@ -191,7 +191,7 @@ void gpu_debug_init(void)
 
 #if !defined(WITH_GLEW_ES) && !defined(GLEW_ES_ONLY)
 	if (GLEW_VERSION_4_3) {
-		glEnable(GL_DEBUG_OUTPUT);
+		//glEnable(GL_DEBUG_OUTPUT);
 		glDebugMessageCallback(gpu_debug_proc, mxGetCurrentContext());
 		glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, NULL, GL_TRUE);
 		GPU_STRING_MARKER(sizeof(success), success);