A new common template called help.cfg has been included to avoid help
keys to be duplicated while prompt.cfg has been changed to be specific
to each mode since it has different requirements for initial text to
be displayed.
Other minor fixes were also been done during the spliting and then
included on this patch too.
All files from syslinux-menu templates directory has been moved to
syslinux/menu. lh_binary_syslinux had some changes to work with that
but they were minimal ones.
Otavio Salvador