an ugly fix to build minizip under windows( ugly, but it works for me)

If anyone can refine this, it is welcomed (see minizip/CMakeLists.txt for comments)

how-to-build-kicad.txt

@@ -87,21 +87,6 @@ development versions of the wxWidgets packages which include the C++ headers. An
 alternative is to build static libaries from source. Verify that wx-config is in
 your path by running it from a command prompt. Linux users then go to next step.
 
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-
-5)  Install zlib [and build it if on windows].
-If on windows, download http://www.zlib.net/zlib123.zip or a newer version.
-Start msys so you have a bash shell. Decide where your zlib build directory
-will be. It must be where you can access it from within the msys environment,
-such as home/<user>. Edit your msys/1.0/etc/fstab file if needed to provide 
-access to this build directory from msys. Unzip the zlib123.zip file into this 
-build directory. Change directories into there, and then:
-    ./configure (CHANGES NEEDED!!!)
-    make
-    make install
-
-
-If linux, use your package manager to install zlib pre-built binaries.
 
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