Compilation error related to gtest compiled by VS2015 toolchain

In some cases, C++ test compilation fails, compiled by VS2015 toolchain automatically added by CT. The error message shows compilation errors regarding gtest sources.

C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\xlocale(341): warning C4530: C++ exception handler used, but unwind semantics are not enabled. Specify /EHsc.

C:\Program Files\Suresoft\CodeScroll Controller Tester 3.7\plugins\com.codescroll.ut_3.7.2/mock/googletest/googletest/include\gtest/gtest-matchers.h(362): error C2535: 'unknown-type testing ::internal::MatcherBase<T>::MatchAndExplainImpl(const testing::internal::MatcherBase<T> &,const T &,testing::MatchResultListener *)': Already defined or declared member function.

C:\Program Files\Suresoft\CodeScroll Controller Tester 3.7\plugins\com.codescroll.ut_3.7.2/mock/googletest/googletest/include\gtest/gtest-matchers.h(351): note: 'testing::internal: See the declaration of :MatcherBase<T>::MatchAndExplainImpl'.

This can happen if VS2015 toolchain is not up to date.

1. Check the VS2015 toolchain version.
2. If the VS2015 toolchain is not up to date, update it to the latest version.

*The latest version is 14.0.25420.10 (VS 2015 with Update 3).