GlkZip version 0.1
by Daniel Schepler <schepler@math.berkeley.edu>
based on XZip 1.8.1 by Andrew Plotkin <erkyrath@netcom.com>, which is
in turn based on ZIP V2.0.7 by Mark Howell <howell_ma@movies.enet.dec.com>

To compile, uncomment one of the definitions for SYSTEMFLAGS in
Makefile, which must include either -DBIG_END_MODE, -DLITTLE_END_MODE,
or -DAUTO_END_MODE.  Also, uncomment the definitions for one of the
given Glk libraries, and replace the definition of GLKDIR with the
correct directory.