Fixed Java packaging specs to work around JRuby 1.3.1 issue when creating empty zip files.
Fixed Java packaging specs to work around JRuby 1.3.1 issue when creating empty zip files.

git-svn-id: d8f3215415546ce936cf3b822120ca56e5ebeaa0@786361 13f79535-47bb-0310-9956-ffa450edef68

apache/buildr,stewi2/buildr,liamchristopher/buildr,jpcaruana/buildr,jpcaruana/buildr,stewi2/buildr,stewi2/buildr,stewi2/buildr,apache/buildr,liamchristopher/buildr,jpcaruana/buildr,apache/buildr,apache/buildr,liamchristopher/buildr,jpcaruana/buildr,liamchristopher/buildr