[xml] win32 getaddrinfo

[Michael Stahl <Michael Stahl Sun com>]

libxml2 2.6.31 would not build for me on win32.
when linking, it complained about missing getadddrinfo and freeaddrinfo 
functions.
because i have no clue when it comes to win32, i googled around, which 
yielded a msdn page that claimed that there are inline implementations of 
these functions in a certain header, resulting in the following patch.

regards,
michael stahl

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*** misc/libxml2-2.6.31/nanohttp.c      Tue Aug 28 19:34:00 2007
--- misc/build/libxml2-2.6.31/nanohttp.c        Mon Mar 31 18:36:16 2008
***************
*** 68,73 ****
--- 68,77 ----
  #endif


+ #ifdef _MSC_VER
+ #include <Wspiapi.h> /* for getaddrinfo, freeaddrinfo */
+ #endif
+
  #ifdef VMS
  #include <stropts>
  #define XML_SOCKLEN_T unsigned int