issue reported from java store team.

use case is when there is a JNLP application, with codebase A and update check=background.

now the JNLP application is moved to codebase B, and do not have check=background.

when this JNLP update happens, the shortcut update failed.

testcase at:
http://javaweb.sfbay.sun.com/~ngthomas/shortcutmove/
http://web-east.east.sun.com/www/webrevs/ngthomas/shortcutmove/