#15 Make the tab switching dialog a bit more useful

Right now the tab switching dialog shows the full
path of the current file. However this dialog is too
narrow and in my case usually displays one directory
per line. This makes it hard to find the base
filename, which is the thing you are most probably
looking for.

This patch displays only the base name - in bold. In
addition, it displays the following three filenames
in the MRU list, each on a new line (not in bold).
This helps to see what file comes next and how many
times one has to press ctrl+tab.

[Anonymous]

patch

[Colomban Wendling]

Committed with the other MRU patches, thanks!