Add slow fallback map for odd class loading cases, and associated fixes

[dmlloyd]

…to avoid mismatch on deserialize and other possible scenarios involving creation of a proxy under differing class loaders than expected

[wildfly-ci]

Build 363 outcome was FAILURE using a merge of 57c43fb
Summary: Tests failed: 2 (2 new), passed: 1 Build time: 00:00:06

Failed tests

org.jboss.ejb.client.ProxyEqualityTestCase.testClientProxyEquality: java.lang.IllegalArgumentException: com.sun.proxy.$Proxy2 is not an interface
	at org.jboss.ejb.client.EJBProxyInformation$1.doCompute(EJBProxyInformation.java:77)
	at org.jboss.ejb.client.EJBProxyInformation$1.computeValue(EJBProxyInformation.java:72)
	at org.jboss.ejb.client.EJBProxyInformation$1.computeValue(EJBProxyInformation.java:66)
	at java.lang.ClassValue.getFromHashMap(ClassValue.java:227)
	at java.lang.ClassValue.getFromBackup(ClassValue.java:209)
	at java.lang.ClassValue.get(ClassValue.java:115)
	at org.jboss.ejb.client.EJBProxyInformation.forViewType(EJBProxyInformation.java:213)
	at org.jboss.ejb.client.EJBInvocationHandler.invoke(EJBInvocationHandler.java:99)
	at com.sun.proxy.$Proxy2.equals(Unknown Source)
	at org.jboss.ejb.client.ProxyEqualityTestCase.testClientProxyEquality(ProxyEqualityTestCase.java:43)
------- Stdout: -------
15:08:06,872 INFO  [org.jboss.ejb.client] (main) JBoss EJB Client version 4.0.0.Beta16-SNAPSHOT


org.jboss.ejb.client.serialization.ProxySerializationTestCase.testProxySerialization: java.lang.IllegalArgumentException: com.sun.proxy.$Proxy2 is not an interface
	at org.jboss.ejb.client.EJBProxyInformation$1.doCompute(EJBProxyInformation.java:77)
	at org.jboss.ejb.client.EJBProxyInformation$1.computeValue(EJBProxyInformation.java:72)
	at org.jboss.ejb.client.EJBProxyInformation$1.computeValue(EJBProxyInformation.java:66)
	at java.lang.ClassValue.getFromHashMap(ClassValue.java:227)
	at java.lang.ClassValue.getFromBackup(ClassValue.java:209)
	at java.lang.ClassValue.get(ClassValue.java:115)
	at org.jboss.ejb.client.EJBProxyInformation.forViewType(EJBProxyInformation.java:213)
	at org.jboss.ejb.client.EJBInvocationHandler.invoke(EJBInvocationHandler.java:99)
	at com.sun.proxy.$Proxy2.equals(Unknown Source)
	at org.jboss.ejb.client.serialization.ProxySerializationTestCase.testProxySerialization(ProxySerializationTestCase.java:63)