Removed GlusterContainerExecutor, not required for hadoop-2.1
Merge branch 'master' into hadoop-2.1.0
Use the glusterfs:/// path in permission denied error message instead of filesystem path.
Merge branch 'master' into hadoop-2.1.0
Throw an exception if the working directory or mapred.system dir doesn't exist. bz1115113
Merge branch 'master' into hadoop-2.1.0
Disable Runtime exception if working directory doesn't exist or if mapred/system directory doesn't exist.

Both directories are needed for map/reduce however they aren't required for hadoop filesystem functions which are common during cluster setup absent of the full framework.
Merge pull request #106 from gluster/hadoop-2.1.0

merge FORKED fixes from hadoop-2.1.0 into master