Parallel testing support in MR jobclient
Unify test root dir definition by all MR jobclient tests
Fixes in path utils
Fix tests
Fix tests
Fix tests
Fix TestEncryptedShuffle to avoid interferring with other tests
Use dedicated staging dirs for M/R clusters
Fix TestMRJobs to avoid NPE
Fix TestRunJar
Fix TestRunJAr
Fix TestMRJobs
Merge branch 'fb-YAHOO-261-trunk-gd' of github.com:griddynamics/yhadoop-common into fb-YAHOO-261-trunk-gd