files that might be left over from a UNIX build, so that they'll be
reconstructed from the "config.h.win32" files on a Windows build.
(If you have "config.h" files left over from a UNIX build, the Windows
build will fail.)
Update "README.win32" to mention "cleanbld.bat", and to correctly list
the files generated using tools that don't come with Windows or MSVC++.
Also note that some of them can't be built on UNIX systems.
svn path=/trunk/; revision=3713
Guy Harris