Use imageformats_nopath when looking for per-map texture overrides

[hemebond]

Merge imageformats_nopath into imageformats_other and remove its use. This now correctly loads per-map texture overrides that are looked for in the textures directory.

Fixes #198

[divVerent]

This removes support for %s.lmp - is that intended?

[divVerent]

Also wonder if it wouldn't be better to add the override/ variants everywhere.

[hemebond]

Also wonder if it wouldn't be better to add the override/ variants everywhere.

That definitely is not intended, but I suspect lmp files are only used for the interface and menus and are usually under /gfx which would get caught by imageformats_gfx. Ironwail only seems to load /gfx/*.lmp.

Any idea why each imageformats_nopath seems to restrict the types? Could we just add lmp to imageformats_nopath?

[divVerent]

First of all, no objections to adding lmp to imageformats_nopath.

The other issue I have is - this makes imageformats_other unused. So maybe just merge the two into one (and call it imageformats_other, as there now is no more special handling for texture names without a slash)?

[hemebond]

@divVerent Thanks, I've merged _nopath into _other. Tested with texture override mod and it still correctly loaded the map-specific overrides.

[divVerent]

This change is definitely harmless now - once someone tested it that it at least does no damage (it really shouldn't be able to, other than slightly more IO load during map load), it should be OK to merge.