Ensure the AG can load specfiles from the MS.  The specfile will be
compressed and serialized before uploaded, and the AG (via libsyndicate)
will decompress and parse it.  This makes Syndicate dependent on zlib,
but pretty much everyone UNIX has this installed anyway.
Update INSTALL and build scripts to include zlib as a dependency for
libsyndicate.
Removed unused code and data from ms-client.cpp