Makes DoubleNear() print the diff between the actual and the expected value when the match fails. 
Also fix bogus MSVC warning about "alignment of a member was sensitive to packing".
Also bring in gtest 701.


git-svn-id: http://googlemock.googlecode.com/svn/trunk@502 8415998a-534a-0410-bf83-d39667b30386