This module provides support for decompression (inflate) of files compressed
with the GZ compression algorithm. This supports only the "DEFLATE" method for
GZIP. Unsupported flags (will result in failure to inflate) include:
GRUB_GZ_CONTINUATION, GRUB_GZ_ENCRYPTED,
GRUB_GZ_RESERVED, and GRUB_GZ_EXTRA_FIELD.