grok-build 1.0.16 (OpenBSD amd64)

OpenBSD build of grok-build 1.0.16.

• Package: grok-build-1.0.16
• xAI SOURCE_REV: a549186d9d39311f2d3ee4208db62af8c65aa476
• Includes the current OpenBSD port fixes and stamped version output.
• Earlier OpenBSD releases remain unchanged.