Move non-GWTTestCase tests in RpcSuite to RpcSuiteNoBrowser,
so they don't unnecessarily get run multiple times in different browser environments.
Also fix the build to handle running *SuiteNoBrowser suites.

Review at http://gwt-code-reviews.appspot.com/1868803

Review by: mdempsky@google.com

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@11377 8db76d5a-ed1c-0410-87a9-c151d255dfc7