Adding zlib for Visual Studio.

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+Summary

+-------

+This directory contains ASM implementations of the functions

+longest_match() and inflate_fast(), for 64 bits x86 (both AMD64 and Intel EM64t),

+for use with Microsoft Macro Assembler (x64) for AMD64 and Microsoft C++ 64 bits.

+

+gvmat64.asm is written by Gilles Vollant (2005), by using Brian Raiter 686/32 bits

+   assembly optimized version from Jean-loup Gailly original longest_match function

+

+inffasx64.asm and inffas8664.c were written by Chris Anderson, by optimizing

+   original function from Mark Adler

+

+Use instructions

+----------------

+Assemble the .asm files using MASM and put the object files into the zlib source

+directory.  You can also get object files here:

+

+     http://www.winimage.com/zLibDll/zlib124_masm_obj.zip

+

+define ASMV and ASMINF in your project. Include inffas8664.c in your source tree,

+and inffasx64.obj and gvmat64.obj as object to link.

+

+

+Build instructions

+------------------

+run bld_64.bat with Microsoft Macro Assembler (x64) for AMD64 (ml64.exe)

+

+ml64.exe is given with Visual Studio 2005, Windows 2003 server DDK

+

+You can get Windows 2003 server DDK with ml64 and cl for AMD64 from

+  http://www.microsoft.com/whdc/devtools/ddk/default.mspx for low price)