clean up sdlmame directory

games-emulation/sdlmame/files/sdlmame-0.144-no-opengl.patch

@@ -0,0 +1,11 @@
+--- ./src/osd/sdl/osdsdl.h.orig
++++ ./src/osd/sdl/osdsdl.h
+@@ -225,6 +225,8 @@
+ 	const char *audio_driver() const { return value(SDLOPTION_AUDIODRIVER); }
+ #if USE_OPENGL
+ 	const char *gl_lib() const { return value(SDLOPTION_GL_LIB); }
++#else
++	const char *gl_lib() const { return NULL; }
+ #endif
+ 
+ private: