Add version qualifier to differentiate releases and development ones

It is always good to see which version we're talking about, so I had
added explicit marker for -devel, -release, -rcX and other states of
the OfflineIMAP.

Signed-off-by: Eygene Ryabinkin <rea@codelabs.ru>

offlineimap/ui/Curses.py

@@ -576,7 +576,7 @@ class Blinkenlights(UIBase, CursesUtil):
         self.bannerwin.clear() # Delete old content (eg before resizes)
         self.bannerwin.bkgd(' ', color) # Fill background with that color
         string = "%s %s" % (offlineimap.__productname__,
-                            offlineimap.__version__)
+                            offlineimap.__bigversion__)
         self.bannerwin.addstr(0, 0, string, color)
         self.bannerwin.addstr(0, self.width -len(offlineimap.__copyright__) -1,
                               offlineimap.__copyright__, color)