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r4488 | helixhorned | 2014-05-28 15:40:19 -0700 (Wed, 28 May 2014) | 5 lines

Miscellaneous cleanup, still with the same suspects...

- in mdloadskin() and gloadtile_hi(), use new function check_nonpow2()
  (bit-twiddling) instead of loop
- Replace a couple of missed literals with CACHEAD_* enum labels
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r4487 | helixhorned | 2014-05-28 15:40:17 -0700 (Wed, 28 May 2014) | 4 lines

Factor out commonly occuring hictinting[]-accessing code into three functions.

Note: in polymer.c, this was buggy (but harmless) because .r is a char:
  if ((uint32_t)hictinting[MAXPALOOKUPS-1].r & 0xFFFFFF00) != 0xFFFFFF00)
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r4486 | helixhorned | 2014-05-28 15:40:16 -0700 (Wed, 28 May 2014) | 7 lines

Replace various GL rendering related literal flags with enum labels.

- pthtyp pth->flags bits
- Flags of the <dameth> argument of various functions
- hictinting[].f / gloadtile_hi() and daskinloader() <effect> arg bits
- hicreplctyp hicr->flags bits
- texcacheheader cachead.flags bits
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r4485 | helixhorned | 2014-05-28 15:40:15 -0700 (Wed, 28 May 2014) | 1 line

polymost.c: stylistic cleanup in gloadtile_hi, uploadtexture, fixtransparency.
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r4484 | helixhorned | 2014-05-28 15:40:14 -0700 (Wed, 28 May 2014) | 4 lines

Polymost: in NPOT wall ypanning "correction", behave like Polymer in one corner case.

Specifically, the handling of one-way walls ([1] in Mapster32) was slightly
different.
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r4483 | helixhorned | 2014-05-28 15:40:12 -0700 (Wed, 28 May 2014) | 1 line

lunatic/util/mapypan.lua: omit MIRROR, don't print maps w/o problematic tiles.
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