[10086] Implement use .go command with shiftlinks or player name.
 

<pre>m sql/mangos.sql
+ sql/updates/10086_01_mangos_command.sql
m sql/updates/Makefile.am
m src/game/Chat.cpp
m src/game/Chat.h
m src/game/Level1.cpp
m src/shared/revision_nr.h
m src/shared/revision_sql.h

[10086] Implement use .go command with shiftlinks or player name.

* Now if for .go command provided no X Y Z args command will not teleport player
to nowhere.
* Instead command allow used with player name and work as simplifed .goname
(teleport to player _point_ in user instance binding, not to player instance)
* Also command can be used with diferent point coordinates provided shift-links:

- player (result for example .lookup player account)
- creature (result .list creature command)
- gameobject (result .list object command)
- tele (result .lookup tele)
- taxinode (result .lookup taxinode)</pre>



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