[z1799] Auction House Bot (AHBot) patch applied

Thanks to Chris K, cyberium, Dolomit6, grether, Kerbe, Naicisum, Paradox, Xeross
and other contributers for creating, long time improvments and patch up-to-date state support.

AHBot disabled by default. For enable it you need have ahbot.conf
in same dir where mangosd.conf placed and enable options:
AuctionHouseBot.Seller.Enabled and/or AuctionHouseBot.Buyer.Enabled

Original version ahbot.conf can be found by path:
src/game/AuctionHouseBot/ahbot.conf.dist.in

Note: chat commands from patch not included in commits and will added later after
      additional work.

Signed-off-by: VladimirMangos <vladimir@getmangos.com>

(based on commit 96e8b33)
(based on commit 5eeb4bd)
(based on commit 422efc5)
(based on commit 966e592)

(based on commit [s1355] - 4286f65)