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r6581 | hendricks266 | 2018-01-15 15:13:50 -0800 (Mon, 15 Jan 2018) | 3 lines

Revert the parts of r3159 corresponding to redefining lotag and hitag as unsigned, so that they are once again signed.

Any issues in Duke's code relating to misunderstanding these types are now restricted to Duke itself rather than changing the engine and potentially introducing new issues in all Build games.
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