JUnitShell now subclasses DevMode instead of GWTShell.

GWTShell has been deprecated for a long time.  We'd like to remove it.  But
first, we to reimplement JUnitShell to use DevMode instead of GWTShell.

http://gwt-code-reviews.appspot.com/361801/show
Review by: jlabanca,jat,spoon,fabbott,amitmanjhi


git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@7955 8db76d5a-ed1c-0410-87a9-c151d255dfc7
21 files changed