GitLab

Improves the scons scripts and run_tests.py (by Vlad Losev); uses typed tests in gtest-port_test.cc only when typed tests are available (by Zhanyong Wan); makes gtest-param-util-generated.h conform to the C++ standard (by Zhanyong Wan).

Makes gtest compile clean with gcc -Wall -Werror (by Zhanyong Wan); refactors scons script (by Vlad Losev).

Implements a subset of TR1 tuple needed by gtest and gmock (by Zhanyong Wan); cleaned up the Python tests (by Vlad Losev); made run_tests.py invokable from any directory (by Vlad Losev).