QAR-493 Linux startup crash

indra/llwindow/llwindowsdl.cpp

@@ -760,6 +760,9 @@ BOOL LLWindowSDL::createContext(int x, int y, int width, int height, int bits, B
 	init_x11clipboard();
 #endif // LL_X11
 
+	//make sure multisampling is disabled by default
+	glDisable(GL_MULTISAMPLE_ARB);
+	
 	// We need to do this here, once video is init'd
 	if (-1 == SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY,
 				      SDL_DEFAULT_REPEAT_INTERVAL))