Applied test case for issue with specified types, and fix (this test
only fails on certain JDKs, specifically hotspotv6 on mac, and v6IBM
on windows, etc.)
Updated some of the test cases that were failing on IBM JDK6:
+CloneableConverter was failing due to IllegalAccessException
+MultiThreadedTestCase was failing upon intentional OOME; added custom
version of this method for IBM jdk
Updated javadocs on Property and NestedProperty
Merge pull request #3 from topicusonderwijs/master

Subtypes not mapped correctly for hibernate proxies
testcase showing problems with cached strategies and proxy classes
Do not use proxy classes as cache keys