Begin migration of CssResource to strict-by-default behavior.
Add a @NotStrict annotation.
Warn unless one of @Strict or @NotStrict annotation is present or the CssResource.strictAccessors module property is set.
Update tests to compile without warnings.

Patch by: bob
Review by: rjrjr

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@5480 8db76d5a-ed1c-0410-87a9-c151d255dfc7
6 files changed