compiler-rt error

[corbettknowles]

while building compiler-rt ran accross this build error its improper _libcpp_end_namespace_std at end of this file which not defined and is stray code the header file is _LIBCPP___TYPE_TRAITS_IS_FUNCTIONAL_H fix is easy just remove it from file its not define include guard

[corbettknowles]

corrected it by moving _libcpp_end_namespace_std up 2 lines and added #define to _libcpp_begin_namespace_std / i post a commit for it later today