Add a config option for the slow framebuf effects.

Like cluts, blitting, etc.  At higher render resolutions these are
expensive, and on some mobile devices they may be too much.

Of course, they're only used when needed so this is a speedhack.

Core/Config.cpp

@@ -397,7 +397,7 @@ static ConfigSetting graphicsSettings[] = {
 	ConfigSetting("SmallDisplay", &g_Config.bSmallDisplay, false),
 	ConfigSetting("ImmersiveMode", &g_Config.bImmersiveMode, false),
 
-	ConfigSetting("TrueColor", &g_Config.bTrueColor, true),
+	ReportedConfigSetting("TrueColor", &g_Config.bTrueColor, true),
 
 	ReportedConfigSetting("MipMap", &g_Config.bMipMap, true),
 
@@ -415,6 +415,7 @@ static ConfigSetting graphicsSettings[] = {
 	ReportedConfigSetting("PostShader", &g_Config.sPostShaderName, "Off"),
 
 	ReportedConfigSetting("MemBlockTransferGPU", &g_Config.bBlockTransferGPU, true),
+	ReportedConfigSetting("DisableSlowFramebufEffects", &g_Config.bDisableSlowFramebufEffects, true),
 
 	ConfigSetting(false),
 };