Win32: Open Watcom C compatibility fixes. Precompiled headers are disabled as they lead to internal compiler errors with long configure lines. Couple of false positive warnings silenced. Various win32 typedefs are adjusted to work with Open Watcom C 1.9 headers. With this patch, it's now again possible to compile nginx using owc386, with options we normally compile on win32 minus ipv6 and ssl.

make -f misc/GNUmakefile release

the required tools:
*) xsltproc to build CHANGES,
*) java and XSLScript ( http://pault.com/pault/XSLScript/ ) to build XSLTs
   from XSLScript sources.


make -f misc/GNUmakefile icons

the required tool:
*) netpbm to create Win32 icons from xpm sources.