[9751] Add index by `spell` to `character_spell`

[newsbot]

<pre>m sql/characters.sql
+ sql/updates/9751_01_characters.sql
m sql/updates/Makefile.am
m src/shared/revision_nr.h
m src/shared/revision_sql.h

[9751] Add index by `spell` to `character_spell`

This is must fix porblem with long logins at
many broken spells in `character_spell` after client switch/etc.</pre>



Дальше... (http://github.com/mangos/mangos/commit/087ededd983cdc9aed3bd7ab96acff19c01381e9)