Completion in command line

[Sylvestre Ledru]

Hi,

I added the completion when Scilab is used in command line under
GNU/Linux / Unix.
It is based on the same completion code as in Jrosetta.
For now, it is only working on the first string.

-->getv[TABULATION]
 getvalue getvariablesonstack getversion

Cheers,
Sylvestre