* INSTALL: Update URL to zlib 1.2.3.
* INSTALL: Update URL to zlib 1.2.3.

Patch by: Ivan Zhakov <chemodax@gmail.com>
Review by: brane

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion