Fix a couple of typos in Google Test's README.


git-svn-id: http://googletest.googlecode.com/svn/trunk@674 861a406c-534a-0410-8894-cb66d6ee9925
Make Google Test build cleanly on Visual Studio 2010, 2012, 2013.
Also improve an error message in gtest_test_utils.py.


git-svn-id: http://googletest.googlecode.com/svn/trunk@675 861a406c-534a-0410-8894-cb66d6ee9925