embrace Java 5


git-svn-id: https://svn.apache.org/repos/asf/ant/ivy/core/trunk@1553872 13f79535-47bb-0310-9956-ffa450edef68
New OSGi resolver 'osgi-agg' : a chain resolver which better handle OSGi dependencies


git-svn-id: https://svn.apache.org/repos/asf/ant/ivy/core/trunk@1553873 13f79535-47bb-0310-9956-ffa450edef68