ACCUMULO-2060 Add a better defaults to the classloader defaults.
Merge branch '1.4.5-SNAPSHOT' into 1.5.1-SNAPSHOT

Conflicts:
	src/start/src/main/java/org/apache/accumulo/start/classloader/AccumuloClassLoader.java
Merge branch '1.5.1-SNAPSHOT' of https://git-wip-us.apache.org/repos/asf/accumulo into 1.5.1-SNAPSHOT