Bug#213185: main-menu: Should set the title to the menu entry text on selections

[Petter Reinholdtsen <pere@hungry.com>]

Package: main-menu
Version: 0.039

One way to make it easier to keep track of which menu entry is beeing
executed in debian-installer, when using a debconf priority >= high
and thus skipping the main menu, is to make sure the main-menu always
set the debconf title when executing a new udeb module, to the
name/menu entry of this module.

This way, the modules do not need to set the titles themselves, to get
a useful title, and the user can relate the title with the menu
entries.