Allow searchin in the key listing also for mail addresses.
* src/keylist.c (search_keylist_function): Hack to search for a mail address.
Due to a missing case insensitive strstr in glib the implemented search
is left-anchored. However, it is useful to search for mail addresses
and thus the search function now does a second left-anchored compare
after an open left angle.
- Signed-off-by: Werner Koch <firstname.lastname@example.org>