pico: detect intentional material name and do not replace them with texture
Detect intentional material name to not replace it with texture name.
Reimplement commits by Garux:
- https://github.com/Garux/netradiant-custom/commit/1bd3e7ae186b55fb61e3738d2493432c0b1f5a7b
- https://github.com/Garux/netradiant-custom/commit/ea21eee2254fb2e667732d8f1b0f83c439a89bfa
This attempts to restore proper material behaviour when the mapper knows what he is doing, also called Julius' case or correct case because Julius is always correct™ while keeping the fallback for other situations, also called newbie's case which may be compatible with third-party tools not following Quake 3 conventions.
Edited by Thomas Debesse