Peter Tyser authored Apr 11, 2012 and Kai Willadsen committed Apr 28, 2012

Previously the Meld window title was changed whenever a notebook label
changed, regardless if that notebook was active or not.  This change
allows background notebook labels to change without impacting the Meld
window title.

The "Only transfer focus once when opening multiple file diffs" patch
causes the Meld window title to cycle even though the active
notebook/tab did not change.

Signed-off-by: Peter Tyser <ptyser@gmail.com>