- Disable Visual Mode view stretching
- Disable increased texture brightness in classic modes
- Increased default Visual Mode FOV from 80 to 90

Update config

See merge request STJr/UltimateZoneBuilder!7

Rebrand UDB to UZB

See merge request STJr/UltimateZoneBuilder!6

Implement proper texture skewing in Visual Mode

See merge request STJr/UltimateZoneBuilder!5

Reduce blockmap use when drawing/stitching geometry

See merge request STJr/UltimateZoneBuilder!4

Thing-based vertex slopes: Pick the right mapthings

See merge request STJr/UltimateZoneBuilder!3

Merge current state of UDB

See merge request STJr/UltimateZoneBuilder!2

The calls to native windows functions wouldn't be valid on any unix os
so expand the check.

The check for Windows XP is removed as that platform is not supported
anymore.

When saving a wad for the second time some code would run that tried to
use native windows function and caused a crash.