Engine/Duke3D: Several changes to TROR traversal in clipping functions
- clipmove() - No longer traverses sectors once a distance limit is exceeded, and at most traverses 64 TROR sectors at once.
- hitscan() - TROR sectors added to clipsectlist after regular next sectors. Only adds TROR sectors in a single direction, and at most 64 at once.
- A_RadiusDamage - only add TROR sectors if inside damage radius. Also increase MAXDAMAGESECTORS to 512, same as MAXCLIPSECTORS.
Fixes glitches and error spam in maps that make heavy use of TROR.