Turns on reading from archives by default.
Adds an optimization to CompileModule to not load multiple files.
Lowers the priority of some error messages so they don't fill
the screen with useless output when TRACE is turned on.

Review at http://gwt-code-reviews.appspot.com/1461801

Review by: jbrosenberg@google.com

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@10355 8db76d5a-ed1c-0410-87a9-c151d255dfc7
10 files changed