Fix for issue #1022; makes GWT.getModuleBaseURL() correct in the mashup case.  Some cases require crazy magic with setting and retrieving the URL of an image.  Also adds a new GWT.getHostPageBaseURL().

Found by: me
Suggested by: jason.essington
Review by: bruce, jgw, mmendez

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@1052 8db76d5a-ed1c-0410-87a9-c151d255dfc7
11 files changed