This patch fixes the caching logic so that Gwt no longer re-reads and
re-processes all jars on the classpath on every refresh.

Patch by: amitmanjhi
Review by: jat (desk review)



git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@4830 8db76d5a-ed1c-0410-87a9-c151d255dfc7