Updated build.properties to set new "icepush.product" var.

git-svn-id: http://anonsvn.icesoft.org/repo/icepush/trunk/icepush@36396 1de00972-ac04-4911-a46b-06793c8d78d9
Updated build.xml, build.properties to use new "icepush.product" var instead of "product" var.

git-svn-id: http://anonsvn.icesoft.org/repo/icepush/trunk/icepush@36397 1de00972-ac04-4911-a46b-06793c8d78d9