ISPN-4118 ISPN-3787 ISPN-4369

ISPN-4118 Unreliable test: ThreadLocalLeakTest.testCheckThreadLocalLeaks
https://issues.jboss.org/browse/ISPN-4118

Ignore the CounterHashCode thread local in EquivalentConcurrentHashMapV8,
it should not be considered a leak since it is static.

ISPN-3787 Upgrade to c3p0 0.9.5-pre4
https://issues.jboss.org/browse/ISPN-3787
ISPN-4369 Upgrade H2 driver to 1.3.173
https://issues.jboss.org/browse/ISPN-4369