minilzo: Update to minilzo-2.08

minilzo: Update to minilzo-2.08

This patch updates the miniLZO library to a newer version, which among other
things fixes "CVE-2014-4607 - lzo: lzo1x_decompress_safe() integer overflow"
that is present in the current used in GRUB.

It also updates the "GRUB Developers Manual", to mention that the library is
used and describes the process to update it to a newer release when needed.

Resolves: http://savannah.gnu.org/bugs/?42635

Signed-off-by: Peter Jones <pjones@redhat.com>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>