Added commands to change the current root directory.
Added commands to change the current root directory.


git-svn-id: 5e26b812b86a0da91cd273fb8beaee28a0b3af5b@1889 fd6133d2-eef9-0310-a487-e40d4489b40b

173210/psplink,173210/psplink,173210/psplink