Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Shift+Ins - paste buffer
Shift+PrintScr - prev. screen

Makes AltGr + E generate the ISO code for the Euro character instead of
a plain 'e'.

Add FreeBSD ID tags while I'm here, since people often copy an exiting
keyboard map and then edit that and try to commit it.

Add French-Canadian keymap.
PR: misc/12615
Submitted by: Alexandre Normand <outcast@globetrotter.net>