Revert, to reduce risks of regressions

glm/detail/setup.hpp

@@ -681,7 +681,9 @@
 // http://gcc.gnu.org/projects/cxx0x.html
 // http://msdn.microsoft.com/en-us/library/vstudio/hh567368(v=vs.120).aspx
 
-#if GLM_COMPILER & (GLM_COMPILER_LLVM | GLM_COMPILER_APPLE_CLANG)
+#if GLM_PLATFORM == GLM_PLATFORM_ANDROID || GLM_PLATFORM == GLM_PLATFORM_CYGWIN
+#	define GLM_HAS_CXX11_STL 0
+#elif GLM_COMPILER & (GLM_COMPILER_LLVM | GLM_COMPILER_APPLE_CLANG)
 #	if defined(_LIBCPP_VERSION) && GLM_LANG & GLM_LANG_CXX11_FLAG
 #		define GLM_HAS_CXX11_STL 1
 #	else