[arch-dev-public] Multiple checksum support

[Jan de Groot]

Recently the ftp-release-list for ftp.gnome.org has switched over to
sha256sums, which means that I can't copy and paste checksums from the
mailinglist anymore. I see that makepkg supports sha256 without
problems, but when I enter sha256sums=('somesum') into a PKGBUILD
without modifying makepkg.conf to use them, makepkg warns about missing
checksums.
Shouldn't makepkg check for any supported checksum type by default? If
sha256sums is defined, it should check them. If sha1sums is defined, it
should check them too, etc. This makes more sense than depending only on
the INTEGRITY_CHECK variable set in makepkg.conf.