Allow iPXE console output to be sent to the VMware logfile via the
GuestRPC mechanism.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

The active keyboard map may be selected by editing KEYBOARD_MAP in
config/console.h.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

Originally-implemented-by: Anselm Martin Hoffmeister <anselm@hoffmeister.be>
Signed-off-by: Michael Brown <mcb30@ipxe.org>

Include config/local/$file in config/$file where it makes sense and
create empty local configs during build if not present.

Modified-by: Michael Brown <mcb30@etherboot.org>
Signed-off-by: Michael Brown <mcb30@etherboot.org>

Add FILE_LICENCE declarations to almost all files that make up the
various standard builds of gPXE.