Suggested edit for multiboot docs

[Bart Grantham]

At http://www.gnu.org/manual/grub/multiboot/  in section 3.3:

"The first longword indicates the presence and validity of other fields 
in the Multiboot information structure. All as-yet-undefined bits must 
be set to zero by the boot loader. Any set bits that the operating 
system does not understand should be ignored. *Thus, the `flags' field 
also functions as a version indicator*, allowing the Multiboot 
information structure to be expanded in the future without breaking 
anything."

You may wish to alter the wording here so that OS developers don't get 
the incorrect impression that the highest 1 bit of the flags field 
should be used to determine the multiboot version that the bootloader 
conforms to.  Hopefully anyone developing operating systems should know 
better, but it contributes to the already heavy congitive load when 
reading technical docs to have to stop and think 'wait... that's not 
quite right.'