Util: getPath used jalib::Filesystem::findHelperUtility.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2255 ba6dc0ae-232f-0410-883f-9ebac64fc565
SSH: minor fix.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2256 ba6dc0ae-232f-0410-883f-9ebac64fc565
SSH: Allow less than 3 arguments.

This is useful in cases where the ssh command is invoked to check the
supported flags. For example, ssh -v.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2257 ba6dc0ae-232f-0410-883f-9ebac64fc565
SSH: Bug fix for commands that include a ';'.

This bug involves commands similar to <ssh host "cmd1; cmd2">.
Correct fix: <dmtcp_ssh ssh host "cmd1; dmtcp-prefix cmd2">.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2258 ba6dc0ae-232f-0410-883f-9ebac64fc565
SSH: Handle "ssh host "cmd1; exec cmd2"

Replace the cmd with "ssh host "cmd1; exec dmtcp-prefix cmd2"

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2259 ba6dc0ae-232f-0410-883f-9ebac64fc565
Activated DMTCP_DISABLE_UID_CHECKING env var.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2260 ba6dc0ae-232f-0410-883f-9ebac64fc565