Core/RBAC: Fix players not being able to reply GMs from the other fac…

…tion (Partial revert of 377cfdb)
Core/Objects: Changed `playercreateinfo_spell` and `playercreateinfo_…

…spell_custom` to use race and class masks.

Specifying a race mask of zero will provide the spell to every race.
Specifying a class mask of zero will provide the spell to every class
that the race can be.

Note: As the SQL truncates `playercreateinfo_spell`, all your "custom"
additions will be gone.
Fixed build.
*Correctly* fixed the build.

Sigh.