sysutils/desktop-installer: Update to 1.1.0

OpenBSD:

Support near completion, largely thanks to Izder456

FreeBSD:

Run pkg update once, then use pkg install -U to skip subsequent repo updates
Greatly improves performance for users from from pkg servers
Restore xf86-video-mga
Tolerate absence of VBoxClient (part of guest additions)

NetBSD:

Document problems with ck-launch

Changes: https://github.com/outpaddling/desktop-installer/releases