KhronosGroup/OpenCOLLADA — pull request #241 by Geenz (2013-10-21 17:19:40+00:00)
Title: Quick fix for compiling under OS X with libc++ and clang.

With C++11 under libc++, the tr1 namespace and its associated directory does not exist. As a fix, check if _LIBCPP_VERSION is defined, and create a namespace alias to std. This should fix a related compilation issue under OS X.