Stick to a single config entry per option.

We don't need a bool in the ini AND an int setting.

This should also fix the anistropy setting, which appears to have been
pretty much broken.  Also makes frameskip enable even if you don't tap
auto, which is what I'd assumed it did before.

Windows/WndMainWindow.cpp

@@ -537,7 +537,7 @@ namespace MainWindow
 				break;
 
 			case ID_OPTIONS_FRAMESKIP:
-				g_Config.bFrameSkip = !g_Config.bFrameSkip;
+				g_Config.iFrameSkip = g_Config.iFrameSkip == 0 ? 1 : 0;
 				break;
 
 			case ID_OPTIONS_USEMEDIAENGINE:
@@ -776,7 +776,7 @@ namespace MainWindow
 		CHECKITEM(ID_OPTIONS_USEVBO, g_Config.bUseVBO);
 		CHECKITEM(ID_OPTIONS_VERTEXCACHE, g_Config.bVertexCache);
 		CHECKITEM(ID_OPTIONS_SHOWFPS, g_Config.bShowFPSCounter);
-		CHECKITEM(ID_OPTIONS_FRAMESKIP, g_Config.bFrameSkip);
+		CHECKITEM(ID_OPTIONS_FRAMESKIP, g_Config.iFrameSkip != 0);
 		CHECKITEM(ID_OPTIONS_USEMEDIAENGINE, g_Config.bUseMediaEngine);
 		CHECKITEM(ID_OPTIONS_MIPMAP, g_Config.bMipMap);
 		CHECKITEM(ID_EMULATION_SOUND, g_Config.bEnableSound);