CAY-1804  Serialisation of long[] type was not working correctly.

patch by      Kris Erik Schwerdt

git-svn-id: https://svn.apache.org/repos/asf/cayenne/main/branches/STABLE-3.0@1460109 13f79535-47bb-0310-9956-ffa450edef68
CAY-1804  Serialisation of long[] type was not working correctly.

release notes

git-svn-id: https://svn.apache.org/repos/asf/cayenne/main/branches/STABLE-3.0@1460110 13f79535-47bb-0310-9956-ffa450edef68