Log message:
games: Replace RMD160 checksums with BLAKE2s checksums

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

Log message:
games: Remove SHA1 hashes for distfiles

Log message:
*: remove dead download site

Log message:
all: migrate homepages from http to https

pkglint -r --network --only "migrate"

As a side-effect of migrating the homepages, pkglint also fixed a few
indentations in unrelated lines. These and the new homepages have been
checked manually.

Log message:
Convert all occurrences (353 by my count) of

	MASTER_SITES= 	site1 \
			site2

style continuation lines to be simple repeated

	MASTER_SITES+= site1
	MASTER_SITES+= site2

lines. As previewed on tech-pkg. With thanks to rillig for fixing pkglint
accordingly.

Log message:
Add SHA512 digests for distfiles for games category

Problems found locating distfiles:
	Package blokus: missing distfile blokus-1.1.tar.gz
	Package crossfire-client: missing distfile crossfire-client-images-1.11.0.tar.gz
	Package dungeon: missing distfile dungeon-gdt-glk.tar.gz
	Package gate88: missing distfile Gate88_Mar19_05.tar.gz
	Package gnuchess4: missing distfile gnuchess-4.0.pl80.tar.gz
	Package ioquake3-pk3: missing distfile quake3-latest-pk3s.zip
	Package rollemup: missing distfile Rollemup.tar.gz
	Package tscp: missing distfile tscp181.zip
	Package xbat: missing distfile xev111.tar.gz
	Package xgalaga: missing distfile xgalaga-2.0.34.tar.gz
	Package xrick: missing distfile xrick-021212.tgz
	Package xskat: missing distfile xskat-cards.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 INSTALLATION_DIRS.

Log message:
Convert @exec/@unexec to @pkgdir or drop it.

Log message:
Remove @dirrm entries from PLISTs