[JGRP-1799] Increase timeout for large value RPC return value tests

Conflicts:
	tests/junit-functional/org/jgroups/blocks/RpcDispatcherTest.java
[JGRP-1799] Increase timeout to 60s for large value RPC return value tests
Merge pull request #133 from rachmatowicz/master

Update RpcDispatcherTest to be in line with 3.2.13.Final