last call for 15.0-RELEASE pkgbase issues

hello,

builds for 15.0-BETA4 will begin tomorrow (October 31).  i have landed
my last batch of pkgbase fixes for releng/15.0 today, and do not plan to
land any more pkgbase changes in releng/15.0 unless new bugs are
discovered prior to release.

if you are aware of any issues in pkgbase that should be fixed for 15.0,
please let me know very soon.

the following issues are known but out of scope for src, and will
probably not be fixed for 15.0:

* the error message when removing a dependency of a vital package is
  uninformative (https://github.com/freebsd/pkg/issues/2517)

* pkg may crash when trying to remove itself during upgrade
  (https://github.com/freebsd/pkg/issues/2496)