Fix ADL Problem with std::tr1::get and boost::geometry::get
Karsten Ahnert found a ADL Problem in gmock-matchers.h
https://groups.google.com/forum/#!topic/googlemock/gQUqfQ_jy2c
Karsten Ahnert: "I had a problem with std::tr1::get in gmock-matchers.h in
combination with boost::geometry::get. It seems to me like an
ADL problem where gmock did not choose the correct overload of get<>."