Merge of r4779, r4840, r4843, r4844: win32 changes.

Merge of r4779, r4840, r4843, r4844: win32 changes.

*) Fixed build with Visual Studio 2005 Express.

   It is available via winetricks which makes it still usable, and has
   an old crtdefs.h which uses _CRT_SECURE_NO_DEPRECATE instead of
   _CRT_SECURE_NO_WARNINGS to suppress warnings.

   Reported by HAYASHI Kentaro,
   http://mailman.nginx.org/pipermail/nginx-devel/2012-August/002542.html

*) Configure: provide inflate() when building zlib on win32.

*) Helper target "win32" to run configure for win32 builds.

*) Updated zlib used for win32 builds.