Add persistent value for spell scripting

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Автор: killerwife


<pre style='white-space:pre-wrap;width:81ex'>Add persistent value for spell scripting</pre>


Подробнее... (https://github.com/cmangos/mangos-wotlk/commit/d43ffcf3090d2e0d55a7cd4a7c46f72e7517c949)