nodejs/deps/zlib

Name: zlib
URL: http://zlib.net/
Version: 1.2.3

Description:
General purpose compression library

Local Modifications:
A few minor changes, all marked with "Google":
- Added #ifdefs to avoid compile warnings when NO_GZCOMPRESS is defined.
- Removed use of strerror for WinCE in gzio.c.
- Added 'int z_errno' global for WinCE, to which 'errno' is defined in zutil.h.