RFC: Add zlib source to src CVS resposity

[H.J. Lu]

Hi,

Binutils can compress/decompress debug sections if zlib is available.
I imported zlib from gcc source tree to binutils source tree. I changed
binutils to use zlib unconditionally. By default, the in-tree zlib is used.
If you configure binutis using --with-system-zlib, system zlib will be used.
My zlib changes are on hjl/zlib branch at

http://git.kernel.org/?p=devel/binutils/hjl/x86.git;a=summary

Any comments?

Thanks.

-- 
H.J.