[plt-scheme] mzmake

I'm attempting to use mzmake to construct a standalone executable, as per the
instructions in the MzScheme compiler manual, section 5.3.

After downloading the unix source files for mzscheme v371, I changed to the src
directory, then ran 
    ./configure
    make

Everything compiled correctly, but I did not get the mzmake utility, and I couldn't
tell from the Makefile how to get it.  Has the name changed?  Maybe the compiler
manual needs updated instructions.

Wayne