Update zanata public package script to new JBoss AS 7 config.
Change the way the public package is built.

Now uses .patch files to make modifications.
Add the zanata.war location as a second argument to the script.

Also modify the as7.patch file to now make as7 accessible from outside localhost.
Add help message when zanata-server-package is not invoked correctly.
Merge pull request #110 from zanata/public-package

Update zanata public package script to new JBoss AS 7 config.