Fix external issues 5521, 5446, 5332, javadoc links

Review at http://gwt-code-reviews.appspot.com/1186801

Review by: rchandia@google.com

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@9356 8db76d5a-ed1c-0410-87a9-c151d255dfc7
7 files changed