DERBY-6637: test errors failures in lang.XMLTypeAndOpsTest, XMLBindingTest and XMLConcurrencyTest with ibm jvms

Work around quirk in IBM JVMs when security manager is enabled by
broadening a catch block to include the exception thrown by IBM in
such cases.

git-svn-id: https://svn.apache.org/repos/asf/db/derby/code/trunk@1605364 13f79535-47bb-0310-9956-ffa450edef68