cleaned up much of the cruft in this thing.
No printf's in the case where things go well.
Gzip-headers can contain filenames and comments (as long as they're
shorter than the page-size.)
I don't think we leak memory, in the "exec/aout" code. I'm not quite sure
about the inflate code yet, but I don't think memory is lost.
Q: Can I add a class M_GZIP to <sys/malloc.h> and bump M_LAST one up
without any thing else needing tweaking ?
Poul-Henning