Log Message:
pkgtools/pkgchkxx: Update to 0.2.3

## 0.2.3 -- 2025-01-16

* Gave up on the `fast-clean` option. `pkgrrxx` previously attempted to
  simulate what `make clean` does instead of just running it, because
  running `make` is slow. But it turned out to be a losing battle due to
  subtlety around `${WRKOBJDIR}` so we just run `make clean` now. Issue
  reported by @schmonz [#6]