[opengrok] Fixing dependency on ant.jar to work at all times

[lubos.ko...@sun.com]

Author: Lubos Kosco <Lubos.Kosco at Sun.COM>
Repository: /hg/opengrok/trunk
Latest revision: b2918f61cf984493d497ab0061138ad61158c813
Total changesets: 1
Log message:
Fixing dependency on ant.jar to work at all times
(no matter of your Netbeans version, environment or type of ant execute method)

Files:
        update: nbproject/project.properties