API GetGMTicketCategories

__NOTOC__
Get the list of available GM ticket categories.
 category1, category2, ... = GetGMTicketCategories()
== Parameters ==
=== Returns ===
A variable number of categories (Strings).
== Example ==
 function ShowAllMyArgs(...)
 for i=1, select("#",...) do
 DEFAULT_CHAT_FRAME:AddMessage( select(i, ...) );
 end
 end
 
 ShowAllMyArgs( GetGMTicketCategories() );
Displays all available GM ticket categories in the chat window.
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