Added love.keyboard.setKeyRepeat and love.keyboard.hasKeyRepeat (resolves issue #717)

src/modules/keyboard/sdl/Keyboard.cpp

@@ -29,11 +29,26 @@ namespace keyboard
 namespace sdl
 {
 
+Keyboard::Keyboard()
+	: key_repeat(false)
+{
+}
+
 const char *Keyboard::getName() const
 {
 	return "love.keyboard.sdl";
 }
 
+void Keyboard::setKeyRepeat(bool enable)
+{
+	key_repeat = enable;
+}
+
+bool Keyboard::hasKeyRepeat() const
+{
+	return key_repeat;
+}
+
 bool Keyboard::isDown(Key *keylist) const
 {
 	const Uint8 *keystate = SDL_GetKeyboardState(0);