kbdmap: Sync with FreeBSD.

kbdmap: Sync with FreeBSD.

* Let bsd.prog.mk set SRCS and MAN to their default values.
* kbdmap.1 markup fixes and fix path for locale.alias.
* Spelling fix in a comment.
* Place quotes around the output, designed to be pasted into rc.conf.
* Fix fd leak in get_font().
* Use auto-sizing syntax appropriate for the new dialog(1).
* Update files with FreeBSD SVN tags.
* Output keymap choice to stderr so it is easier to parse.
* Use sizeof() for calculating the buffer size instead of hard-coded
  values.
* Fixed two bugs in Perl to C conversion that prevented locale name
  from being parsed correctly.

Obtained-from:   FreeBSD