add a variable SNAP_GZIP_CMD to the snap_tar target - here my comment

add a variable SNAP_GZIP_CMD to the snap_tar target - here my comment
in the Makefile:

# check if SNAP_GZIP_CMD is set - else set it to "gzip -9"
# you may set it to "cat" alternatively for architectures
# where the gzip'ing would take too much time (pmax or slower :-)
# this way you get only tar'ed snap files and you can gzip
# them on a faster machine