Need to use a different ClassLoader than the APIVerifier one,
because we do not want to inherit its GeoAPI dependency in this case.


git-svn-id: https://svn.apache.org/repos/asf/sis/branches/JDK8@1635918 13f79535-47bb-0310-9956-ffa450edef68
Reduce memory usage by avoiding the creation of unused empty collection
in equals, hashCode, toString, freeze, isEmpty and prune methods.


git-svn-id: https://svn.apache.org/repos/asf/sis/branches/JDK8@1635919 13f79535-47bb-0310-9956-ffa450edef68