Author: Kev <klmitch@mit.edu>

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

* Simplify logic for determining when to run register_user(); before, we
  explicitly checked to see if the username, hostname, and cookie were all
  set, and now we can just test to see if a bit flag is 0.

* Fix a minor bug in ircd_strn?cmp() that we've never noticed before,
  because we've never needed lexicographic ordering for strings differing
  in case.

* Implement capabilities system.  There are 604 capabilities implemented
  for testing purposes, but they don't do anything.  (This is just the
  negotiation mechanism.  The 604 were needed to test LS & LSL semantics.)

git-svn-id: file:///home/klmitch/undernet-ircu/undernet-ircu-svn/ircu2/trunk@1284 c9e4aea6-c8fd-4c43-8297-357d70d61c8c