commit -- autosave

[Joaqu�n Cuenca Abela]

Very simple autosave support.
Tomorrow I will add (at least I hope so! :) the preference items to
configure the different autosave options (file extension, time between
autosaves, etc.)
By now it's only activated in the DEBUG build (with a hardcoded timeout
of 5 minutes).

Cheers,

--
Joaquin Cuenca Abela
[EMAIL PROTECTED]