[RFC] FAT signature

[Vladimir 'phcoder' Serbinenko]

Hello. Currently one on FAT* check is a check for string FAT* at
specific location. This check was added to avoid detecting some
recovery partitions as fat even if they are really FAT and previously
you could access them from GRUB. I find this approach incorrect since
even if data on this partition is considerd useless by someone it may
be useful for someone else (for recovery purposes especially).
Furthermore during LSF I met someone who had a Symbian-based phone and
wanted to install GRUB on it to be able to use phone as USB bootable
disk. The FAT was formatted by Symbian and had no FAT* string but was
otherwise correct.
May I remove this check?

-- 
Regards
Vladimir 'phcoder' Serbinenko

Personal git repository: http://repo.or.cz/w/grub2/phcoder.git