Add bold8x16 font

Source:
http://ftp.netbsd.org/pub/NetBSD/NetBSD-current/src/sys/dev/wsfont/bold8x16.h

Mapped to Unicode with:
http://www.unicode.org/Public/MAPPINGS/VENDORS/MICSFT/PC/CP437.TXT

The source has a NetBSD Foundation copyright with a 2-clause BSD license,
and also the comment:

/*
 * This font lives in the public domain. It it a PC font, IBM encoding,
 * which was designed for use with syscons.
 */

This font is equivalent to FreeBSD's sys/dev/fb/boot_font.c