Removed Canvas:clear. love.graphics.clear now accepts r,g,b,a values (and defaults to 0,0,0,0 with no arguments given.) love.graphics.clear clears the content of the currently active Canvas(es.)

--HG--
branch : minor

src/scripts/boot.lua

@@ -526,7 +526,7 @@ function love.run()
 		if love.update then love.update(dt) end -- will pass 0 if love.timer is disabled
 
 		if love.graphics and love.graphics.isActive() then
-			love.graphics.clear()
+			love.graphics.clear(love.graphics.getBackgroundColor())
 			love.graphics.origin()
 			if love.draw then love.draw() end
 			love.graphics.present()