1) I enhanced qtssh to support logging. To enable logging specify
   "-log logfilename" in the ssh arguments. It will create a log file with
   the specified name.

2) I enhanced qtssh to build on linux.

3) I changed the version number to 2.6.3.



git-svn-id: http://visit.ilight.com/svn/visit/trunk/src@20777 18c085ea-50e0-402c-830e-de6fd14e8384