Log message:
all: replace SUBST_SED with the simpler SUBST_VARS

pkglint -Wall -r --only "substitution command" -F

With manual review and indentation fixes since pkglint doesn't get that
part correct in every case.

Log message:
Remove mk/find-prefix.mk usage from the pkgtools category.

The find-prefix infrastructure was required in a pkgviews world where
packages installed from pkgsrc could have different installation
prefixes, and this was a way for a dependency prefix to be determined.

Now that pkgviews has been removed there is no longer any need for the
overhead of this infrastructure.  Instead we use BUILDLINK_PREFIX.pkg
for dependencies pulled in via buildlink, or LOCALBASE/PREFIX where the
dependency is coming from pkgsrc.

Provides a reasonable performance win due to the reduction of `pkg_info
-qp` calls, some of which were redundant anyway as they were duplicating
the same information provided by BUILDLINK_PREFIX.pkg.

Log message:
LICENSE=modified-bsd

Log message:
Just define PKGNAME and use it.

Log message:
Use Mt for email addresses.

Log message:
"user-destdir" is default these days

Log message:
Remove @dirrm entries from PLISTs

Log message:
Remove redundant NO_CHECKSUM and EXTRACT_ONLY definitions.