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r3157 | helixhorned | 2012-11-13 02:50:13 -0800 (Tue, 13 Nov 2012) | 5 lines

Mapster32: set first walls more conveniently on split in one special case.

Specifically, if the first wall of the sector-to-split is to the left or right
of the *start* of the splitting line AND the sector has no TROR extensions,
make these two the new nextwalls of the respective split sectors.
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r3156 | helixhorned | 2012-11-13 02:50:06 -0800 (Tue, 13 Nov 2012) | 1 line

Rewrite old-version-savegame signaling in a cleaner fashion.
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