Quaternion elements order inconsistency depending on GLM_LANG_CXXMS_FLAG

[GPopov]

The order of the w,x,y,z members in quats is not consistent, depending if GLM_LANG has the GLM_LANG_CXXMS_FLAG set. This currently produces a warning of the type:

field 'w' will be initialized after field 'x' [-Werror,-Wreorder]
in instantiation of member function 'glm::qua<float, glm::packed_lowp>::qua' requested here

The incosistency seems to have been introduced in abcc460

glm/glm/detail/type_quat.hpp

Lines 42 to 51 in 947527d

	# if GLM_LANG & GLM_LANG_CXXMS_FLAG
	union
	{
	struct { T w, x, y, z;};
	typename detail::storage<4, T, detail::is_aligned<Q>::value>::type data;
	};
	# else
	T x, y, z, w;
	# endif

[pwipf]

I just commented on closed issue #916 before seeing this issue.

Inconsistent order caused by commit f5381ef.

My 2 cents is to roll back to the storage order x,y,z,w, which is consistent with glm::vec4 storage order, and openGL vec4 storage order, and is consistent with other well respected matrix libraries (Eigen).

Please see my comments on issue #916.

[Groovounet]

This issue has been resolved with #942.

Thanks for reporting !