Add a visual gear for drawing circles. Intent is to allow specifying areas on map for lua scripts (such as to indicate a location to go to). Could also be used to, say, circle a hog in CTF. Also add a "Critical" flag for visual gears so a gear flagges as such will always be created.

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[patterns]

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**.h = native

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**.c = native

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**.cpp = native

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**.lua = native

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**.txt = native

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**.pas = native

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**.inc = native