[OE-core] [PATCH v2] systemd: set default.target to multi-user.target

[Burton, Ross]

Hi,

Been chatting to Richard.  How about systemd ships a symlink to
multi-user, and the X11 init script packages change the symlink to
graphical in their postinst.

(we must remember to put this in the release notes for anyone who has
a custom X init script)

Ross