gmod_game: Made util.tobool an alias of tobool instead of a n..

Revision 783
Made util.tobool an alias of tobool instead of a new function.
Added back math.Rand (oops) Changed Files:
[ul]
[li]trunk/lua/includes/extensions/math.lua [/li][li]trunk/lua/includes/extensions/util.lua[/li][/ul]

Committed By Alexander Overvoorde