Add Windows support to the FF4 plugin.

Also, fixup existing projects to align with our new GECKO_VERSION definition.

Patch is really mostly by fabiomfv@, but it's just easier to add under my workspace.

Review at http://gwt-code-reviews.appspot.com/1327801


git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@9617 8db76d5a-ed1c-0410-87a9-c151d255dfc7
13 files changed