[notmuch] A gtk interface

[Baruch Even]

Hi,

I've started to work on a Gtk+ interface to notmuch which uses the 
notmuch command line. Currently it is able to search threads and retag 
them. Next on the agenda is the ability to actually read the threads.

If someone is interested, the code lives in 
http://github.com/baruch/notmuch-gtk and can be checked out from 
git://github.com/baruch/notmuch-gtk.git

The recent streaming changes made things smoother. Though tagging is 
excessively slow if done on a thread-by-thread basis as I implemented it 
now.

Baruch