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r2696 | helixhorned | 2012-05-25 11:39:25 -0700 (Fri, 25 May 2012) | 1 line

Fix harmless "cast to pointer from integer of different size" warning with x64.
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r2695 | helixhorned | 2012-05-25 11:39:22 -0700 (Fri, 25 May 2012) | 1 line

Cleanup & minor rewrites, among other things in premap.c:G_EnterLevel().
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r2694 | helixhorned | 2012-05-25 11:39:19 -0700 (Fri, 25 May 2012) | 4 lines

With engine compiled for V7 limits, refuse loading maps exceeding them.

Also, correct the loadboard() return value checks in premap.c to be
aware of a returned -2 ("wrong map version").
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