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).

scons/SConstruct.common

@@ -243,10 +243,8 @@ class SConstructHelper:
       # Invokes SConscript with variant_dir being build/<config name>.
       # Counter-intuitively, src_dir is relative to the build dir and has
       # to be '..' to point to the scons directory.
-      SConscript('SConscript',
-                 src_dir='..',
-                 variant_dir=env['BUILD_DIR'],
-                 duplicate=0)
+      VariantDir(env['BUILD_DIR'], src_dir='../..', duplicate=0);
+      SConscript(env['BUILD_DIR'] + '/gtest/scons/SConscript')
 
 
 sconstruct_helper = SConstructHelper()