Author: Kev <klmitch@mit.edu>

Author: Kev <klmitch@mit.edu>
Log message:

Suppress key leaks during net junctions by making keys appear as "*".  Does
NOT affect normal user (or even server) /MODE commands.

This change to the trunk has NOT been tested.  The code implementing +A and
+u has been touched.  I *believe* the resulting code will work, but someone
should please sanity-check this--I don't have the facilities to verify this
change up front.

(pull-up from the u2_10_11 branch)

git-svn-id: file:///home/klmitch/undernet-ircu/undernet-ircu-svn/ircu2/trunk@689 c9e4aea6-c8fd-4c43-8297-357d70d61c8c