Problems found locating distfiles:
Package modular-xorg-server: missing distfile xorg-server-1.17.4.tar.bz2
Package py-qt4: missing distfile PyQt-mac-gpl-4.11.1.tar.gz
Package xservers: missing distfile xservers-3.3.6.5.tar.bz2
Package xview-clients: missing distfile xview3.2p1-X11R6.tar.gz
Package xview-lib: missing distfile xview3.2p1-X11R6.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.
libXext/buildlink3.mk, now that it is included there.
Leave the places where its API version is set or variables from it
are used directly (about 3 packages).