Possibility to run "scripts/hudson/narayana.sh" on different platforms.

Currently "scripts/hudson/narayana.sh" uses "sed" command with "-i" option, so it looks like:
"sed -i file -e expression".
"-i" option is not supported on some platforms (HP-UX).

We need to apply workaround here and modify "sed" commands to be in this format:
"sed -e expression file > file.tmp && mv file.tmp file"