allow vi usage and create empty file just in case editor is not found or file is not saved
allow vi usage and create empty file just in case editor is not found or file is not saved

git-svn-id: 2e53488d9209c65fe9d0c09c5eb853d489467477@148 983eb3c8-5785-a445-9050-7f41236cb99f

christandiono/pipelineconverter,christandiono/pipelineconverter,christandiono/pipelineconverter