DFS home directory based on the user the process is running under.
Multi user fix requiring a 'super user' specification in the core-site.xml.  The super user should be used to run the hadoop daemon services.

This user will be granted read access to the DFS for job scheduling purposes.
Staging directory filter.  Uses 2 regular expressions to filter out the stating directory based on the apache core classes algorithm (LocalJobRunner.java & JobTracker.java)
added additional staging heuristic for hadopo 2.x
Merge branch 'master' into super_user

Conflicts:
	src/main/java/org/apache/hadoop/fs/glusterfs/GlusterVolume.java
Merge pull request #61 from childsb/super_user

multi-user/multi-tenancy support for hadoop on glusterfs