Merc 2.1 Tracking Functions - Rip

Original track.merc21.tar.gz with README, hash.c, hash.h, skills.c, skills.h and the historical ftp_game.org document. Provides tracking functions and example commands rather than a complete game.

License and attribution
Source notices refer to SillyMUD license.doc, which is not bundled here. The README invites sharing improved versions but does not replace the referenced distribution terms. Review the SillyMUD terms and applicable inherited DikuMUD and Merc requirements before approval.

Compatibility warnings
Written for Merc 2.1. The documented negative-distance setting changes door traversal. Review search bounds, room identifiers, area restrictions and command permissions. Example commands are not production-ready features. Historical contact and FTP addresses may no longer work.

Historical software warning
Mudhaven has not compiled, boot-tested or security-audited this material. Modern compiler and operating-system compatibility is unverified. Review the original notices before use.

Ported from SillyMUD to Merc by Robert L. Peckham (Rip). Preserve the original SillyMUD developer credits and applicable DikuMUD and Merc notices.