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

Add the Euro character on AltGr + E in these european keymaps as well.

Reminded by: Anders Andersson <anders@sanyusan.se>
alex@big.endian.de (Alexander Langer)

- Fix Swiss keymaps: swissfrench.iso.kbd and swissgerman.iso.kbd.
Add new keymaps: swissfrench.iso.acc.kbd, swissgerman.acc.kbd,
swissfrench.cp850.kbd, and swissgerman.cp850.kbd.

PR: conf/14667
Submitted by: Blapp Martin (mb@imb.ch)
Tested by: a number of Swiss users.

- Fix errors in some keymap files.

- The numpad * key should always generate *.
- The numpad - is fkey52 and should not generate a control code (0x1f).
- The numpad 5 is fkey54, not fkey61.
- The numpad 6 is fkey55 and should not generate a control code (0x1e).

- Fix Spanish keymap.
PR: i386/9532
Submitted by jose@we.lc.ehu.es.

- Added Croatian keymap. It is the same as the Slovenian keymap.
PR: misc/9706
Pointed out by: Damjan Marion

- Addef Finnish keymap. It is the same as the Swedish keymap.
PR: bin/9632
Submitted by: Martti Kuparinen

- Assign special functions consistently in all keymap files.

101 keyboard 84 keyboard function
------------------------------------------------------------------------
Ctrl-Alt-Delete Ctrl-Alt-Delete reboot
Ctrl-Alt-Esc Ctrl-Alt-Esc debug
Ctrl-Alt-Space Ctrl-Alt-Space susp
ScrollLock ScrollLock slock
PrintScreen Shift-(Numpad *)/PrintScreen nscr
Ctrl-PrintScreen Shift-Ctrl-(Numpad *)/PrintScreen debug
Alt-PrintScreen/SysRq SysRq nop
Pause Ctrl-NumLock slock
Shift-Pause Shift-Ctrl-NumLock saver
Alt-Pause Alt-Ctrl-NumLock susp
Ctrl-Pause/Break Ctrl-ScrollLock/Break nop
Left W*ndow key NA fkey62
Right W*ndow key NA fkey63
Menu NA fkey64

NOTE: us.unix.kbd and us.emacs.kbd are very much different from the
other keymaps, thus, I didn't touch them.

The control code ^_ (0x1f) should really be called `us' rather than `ns'.

- Correct inconsistencies among keymaps.
- define CTL-ALT-ESC as `debug' key in all keymaps. (FAQ mentions this
key sequence but not all keymaps had it!)
- define CTL-SPACE as NUL in all keymaps.
- define CTL-ALT-SPACE as `suspend' key in all but Russiun keymaps.
- Fix Japanese keymaps. Some CTL- keystrokes were wrong.
- Remove accent (dead) key definitions from spanish.iso.kbd,
fr.iso.kbd and icelandic.iso.kbd. Create spanish.iso.acc.kbd,
fr.iso.acc.kbd and icelandic.iso.acc.kbd with accent key definitions
instead.
- Update INDEX.keymaps and Makefile.

Add swissgerman keyboard
Submitted by: Adrian Steinmann <ast@marabu.ch>