QPID-5422: update release.sh to copy the maven artifacts for the broker-core module, following changes in QPID-5159

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1551041 13f79535-47bb-0310-9956-ffa450edef68
QPID-5423: list only the additional deps needed by the plugin, rather than its actual deps, to prevent duplication by the release package creation process.

Largely reverts the effective value of the 'broker-plugins-management-http.libs' property to its old [incorrect] state other than r1529610 for QPID-5207/QPID-5048 adding the dojo dep. Yet another example of our Ant build making the simplest things difficult.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1551042 13f79535-47bb-0310-9956-ffa450edef68