Switch ImageBundleBuilder to use ImageIO.getImageReaders() and to attempt alternate ImageReaders if there is an exception while calling read().
Give ImageBundleBuilder a main() method to validate input files.

Patch by: bobv
Review by: rjrjr

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@5932 8db76d5a-ed1c-0410-87a9-c151d255dfc7
1 file changed