A little gtest cleanup after r86287

A little gtest cleanup after r86287

Source/ThirdParty:

* gtest/msvc/gtest-md.vcproj: Added Debug_All and Production configurations to match our
other projects. (At some point all the settings should be moved into .vsprops files to match
our other projects, too.)

Source/WebKit/win:

* WebKit.vcproj/WebKit.sln:
    - Move gtest into the Tools folder
    - Make gtest build just before TestWebKitAPIGenerated
    - Use gtest's new Debug_All and Production configurations as appropriate

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@86336 268f45cc-cd09-0410-ab3c-d52691b4dbfc