Removed API from TnyFolder

[Philip Van Hoof <spam pvanhoof be>]

Hi there,

The tny_folder_set_name API has been removed because it was impossible
to correctly implement this with Tinymail's mmap()ed summaries design.

It's still possible to use the tny_folder_copy API, though. In case the
account is the same (of the from and to parameters) and the del boolean
parameter is set to TRUE, it will use the far more efficient RENAME IMAP
command with IMAP servers.

Locally, though, the only way is to destroy the folder and create a new
one. This is precisely what tny_folder_copy will do.


-- 
Philip Van Hoof, software developer
home: me at pvanhoof dot be 
gnome: pvanhoof at gnome dot org 
http://www.pvanhoof.be/blog