[10251] Clarify error message for one from redundent `commamd` data case.

[newsbot]

<pre>m sql/mangos.sql
+ sql/updates/10251_01_mangos_command.sql
m sql/updates/Makefile.am
m src/game/Chat.cpp
m src/shared/revision_nr.h
m src/shared/revision_sql.h

[10251] Clarify error message for one from redundent `commamd` data case.</pre>



Дальше... (http://github.com/mangos/mangos/commit/eb129946aa8765714c69c48427e35fa8ad0ae28b)