Fix for PR #195 for Java 6

Use Java 6's recommended equivalent of Java 7's Logger.getGlobal() to retain Java 6 compatibility. See PR #195

Author: Sean Owen <sowen@cloudera.com>

Closes #334 from srowen/FixPR195ForJava6 and squashes the following commits:

f92fbd3 [Sean Owen] Use Java 6's recommended equivalent of Java 7's Logger.getGlobal() to retain Java 6 compatibility