Fill 5/8 of screen dimensions with reticle, a small increase

git-svn-id: http://zxing.googlecode.com/svn/trunk@2816 59b500cc-1b3d-0410-9834-0bbf25fbcc57
Show used prices if no new price is available, and search for expanded UPC-A value from UPC-E

git-svn-id: http://zxing.googlecode.com/svn/trunk@2817 59b500cc-1b3d-0410-9834-0bbf25fbcc57