[10244] Implement .stable gm command for open pet stable anywhere.

[newsbot]

<pre>m sql/mangos.sql
+ sql/updates/10244_01_mangos_command.sql
m sql/updates/Makefile.am
m src/game/Chat.cpp
m src/game/Chat.h
m src/game/Level3.cpp
m src/game/NPCHandler.cpp
m src/game/WorldSession.h
m src/shared/revision_nr.h
m src/shared/revision_sql.h

[10244] Implement .stable gm command for open pet stable anywhere.

Maybe command not so useful for stable case because spell can be learned,
but it example how can be packet allowed depndent from player possibility
when some functionality base at many packets recieved from client.
Same way possible can be used for auction anywhere, maybe some other cases.

Also it will very usefull for 2.x/1.x branches where no another way... ;)</pre>



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