Disable std::tr1 deprecation warning in MSVC for googletest. (#93)
Disable std::tr1 deprecation warning in MSVC for googletest. (#93)

Visual Studio 17, tools update 2 (15.5) makes the use of std::tr1
deprecated and an error at /W3.  This ignores that error and should
be removed once googletest fixes this upstream.

see: https://github.com/google/googletest/issues/1111
amznlabs/ion-c,amzn/ion-c,amznlabs/ion-c,amznlabs/ion-c,amznlabs/ion-c,amzn/ion-c,amzn/ion-c,amzn/ion-c