[Qgis-developer] How set up last used directory

[Giuseppe Sucameli]

Hi guys,
I'm Giuseppe Sucameli and I working for Faunalia on GdalTools-plugin.

I want to set up the last used directory for reading and saving, but I've
looked in qgis code, there is no a standard setting for all plugins.
So, i can use a plugin scope setting, but it's most useful discuss it to find
the better solution.

What do you think about?
Greets!

-- 
Giuseppe Sucameli