propose 0.14.4 release

[Nigel Daley]

I'd like to propose a 0.14.4 release fixing these items:
http://issues.apache.org/jira/browse/HADOOP-2001
http://issues.apache.org/jira/browse/HADOOP-2169
http://issues.apache.org/jira/browse/HADOOP-2140

If there are no objections, I make this release (and a corresponding  
0.15.1 release) tomorrow.

Thanks,
Nige