Log message:
sysutils: Replace RMD160 checksums with BLAKE2s checksums

All checksums have been double-checked against existing RMD160 and
SHA512 hashes

Log message:
sysutils: Remove SHA1 hashes for distfiles

Log message:
Comment out dead sites (DNS problems).

Log message:
Add SHA512 digests for distfiles for sysutils category

Problems found with existing digests:
	Package memconf distfile memconf-2.16/memconf.gz
	b6f4b736cac388dddc5070670351cf7262aba048 [recorded]
	95748686a5ad8144232f4d4abc9bf052721a196f [calculated]

Problems found locating distfiles:
	Package dc-tools: missing distfile dc-tools/abs0-dc-burn-netbsd-1.5-0-gae55ec9
	Package ipw-firmware: missing distfile ipw2100-fw-1.2.tgz
	Package iwi-firmware: missing distfile ipw2200-fw-2.3.tgz
	Package nvnet: missing distfile nvnet-netbsd-src-20050620.tgz
	Package syslog-ng: missing distfile syslog-ng-3.7.2.tar.gz

Otherwise, existing SHA1 digests verified and found to be the same on
the machine holding the existing distfiles (morden).  All existing
SHA1 digests retained for now as an audit trail.

Log message:
Drop superfluous PKG_DESTDIR_SUPPORT, "user-destdir" is default these days.

Log message:
Fix makefile provided by patch-ai to work properly with make -j.

Log message:
Fix assorted build problems. Should close PR 42081. While here, add at
least minimal comments to all patches and tidy up some (but by no
means all) pkglint.

I have no idea if this works. It spews warnings about "packed", which
lead me to suspect it may not run correctly, but I don't have the
facilities to test it. It does, however, now build ok on LP64 and if
someone can test it may be reasonable to remove the restriction on that.

Log message:
DESTDIR support

Log message:
Update MASTER_SITES.

Log message:
Need pre-created directory 'sbin', not 'bin'.