Syntax: AKILL ADD  [+expiry] mask reason
        AKILL DEL  [mask|num]
        AKILL LIST [mask]",
        AKILL INFO [mask|num] -- [SRA]

Allows IRCops to manipulate the AKILL list.  If a user
matching an AKILL mask attempts to connect, Services will
issue a KILL for that user and, on supported server types,
will instruct all servers to add a ban (K-line) for the
mask which the user matched.

AKILL ADD adds the given user@host mask to the AKILL
list for the given reason (which must be given).
AKILL DEL removes the given mask from the AKILL list if it
is present.  AKILL LIST shows all current AKILLs; if the
optional mask is given, the list is limited to those
AKILLs matching the mask.  AKILL VIEW is a more verbose
version of AKILL LIST, and will show who added an AKILL,
the date it was added, and when it expires, as well as the
user@host mask and reason.

Expiry is specified as an integer followed by one of d (days),
h (hours), or m (minutes).  Combinations (such as 1h30m)
are not permitted.  If a unit specifier is not included,
the default is days (so \37+30\37 by itself means 30 days).
To add an AKILL which does not expire, use +0.  If the
usermask to be added starts with a +, an expiry time must
be given, even if it is the same as the default.  The
current AKILL default expiry time can be found with the
SETTINGS command.

AKILL INFO, permits Services Roots to change an akill reason.
This may be used to inappropriate reasons, or to further describe
in detail what the AKILL was places for
The "reason" is intended for use by IRC operators only, and
will not be displayed to users in KILL messages.
This command is limited to Services Operators

Note: - Default expiry time is 15mins
      - IRCop can not add expiry time longer than 15mins
      - Only Services Root can add permanent akill
