fixed: compile problems w/ non-existent header files

glm/ext.hpp

@@ -73,7 +73,7 @@
 #include "./gtc/quaternion.hpp"
 #include "./gtc/random.hpp"
 #include "./gtc/reciprocal.hpp"
-#include "./gtc/swizzle.hpp"
+// #include "./gtc/swizzle.hpp"
 #include "./gtc/type_precision.hpp"
 #include "./gtc/type_ptr.hpp"
 #include "./gtc/ulp.hpp"
@@ -81,7 +81,7 @@
 #include "./gtx/associated_min_max.hpp"
 #include "./gtx/bit.hpp"
 #include "./gtx/closest_point.hpp"
-#include "./gtx/color_cast.hpp"
+// #include "./gtx/color_cast.hpp"
 #include "./gtx/color_space.hpp"
 #include "./gtx/color_space_YCoCg.hpp"
 #include "./gtx/compatibility.hpp"