Windows port merge - Service support (part 1) [PATCH]

Hi,

This is the 8th of some splitted Cygwin and native Windows patches grouped
by functionality.

Cygwin and Native Windows port enhancements:

- main.cc and protos.h: changed rotate_logs() and reconfigure() from static
to global (needed by service functionality), added Windows platform info in
cache.log
- win32.cc: new service support core functions, changed platform
identification from "Windows .NET" to "Windows Server 2003"
- include/squid_windows.h: New file, needed to prevent naming conflicts
between Windows includes and Squid

Regards

Guido

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Serassio Guido
Via Albenga, 11/4 10134 - Torino - ITALY
E-mail: guido.serassio@serassio.it
WWW: http://www.serassio.it