Adds a note in the "uninteresting mock method call" warning to advise people how to handle the warning.
Clarifies the purpose of utilities in gmock-port.h and adds guidance w.r.t. gmock-port.h vs gtest-port.h.
Pulls in gtest r674.


git-svn-id: http://googlemock.googlecode.com/svn/trunk@465 8415998a-534a-0410-bf83-d39667b30386