Document GLM_FORCE_UNRESTRICTED_GENTYPE and generate an error if both GLM_FORCE_SWIZZLE and GLM_FORCE_UNRESTRICTED_GENTYPE are defined at the same time

glm/detail/setup.hpp

@@ -3,6 +3,10 @@
 
 #pragma once
 
+#if defined(GLM_FORCE_SWIZZLE) && defined(GLM_FORCE_UNRESTRICTED_GENTYPE)
+#	error "Both GLM_FORCE_SWIZZLE and GLM_FORCE_UNRESTRICTED_GENTYPE can't be defined at the same time"
+#endif
+
 ///////////////////////////////////////////////////////////////////////////////////
 // Messages