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

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

$Id$ -> $FreeBSD$

Add splash screen module. This version has rather limited
capabilities, but should be a good start... Well, sort of.

It can handle W*ndows 256 color BMP file. (Other color depth probably
won't work.) The size of the image must be 320x200 or less. *sigh*