GRP 1.02

Extract/create support for GRP (Duke Nukem 3D and other Build engine-based games group file) file format in Total Commander. List of some games that uses Build engine, and consequently GRP format to store files:
o Duke Nukem 3D
o Blood
o Shadow Warrior
o Redneck Rampage
o Witchhaven
o TekWar
o Extreme Paintbrawl
o Powerslave
o NAM/Napalm
o WWII GI
o ...some sequels, some unreleased games, and a bunch of TCs.