Fixes a thread annotation; updates CHANGES for 1.7.0

git-svn-id: http://googletest.googlecode.com/svn/trunk@653 861a406c-534a-0410-8894-cb66d6ee9925
When --gtest_filter is specified, XML report now doesn't contain information about tests that are filtered out (issue 141).

git-svn-id: http://googletest.googlecode.com/svn/trunk@654 861a406c-534a-0410-8894-cb66d6ee9925