problems compiling current base on windows

[Riccardo Mottola]

Hi,

on my older mingw setup, I get:

 Compiling file NSXMLNode.m ...
NSXMLNode.m: In function `-[NSXMLNode XMLStringWithOptions:]':
NSXMLNode.m:1517: error: `XML_SAVE_AS_XML' undeclared (first use in this 
functio
n)
NSXMLNode.m:1517: error: (Each undeclared identifier is reported only once
NSXMLNode.m:1517: error: for each function it appears in.)
NSXMLNode.m:1520: error: `XML_SAVE_WSNONSIG' undeclared (first use in 
this funct
ion)
make[4]: *** [obj/libgnustep-base.obj/NSXMLNode.m.o] Error 1
make[3]: *** [internal-library-all_] Error 2
make[2]: *** [libgnustep-base.all.library.variables] Error 2
make[1]: *** [internal-all] Error 2
make: *** [internal-all] Error 2

I don't have this problem elsewhere. Perhaps we do require a a more 
recent libxml? Perhaps configure should check that.

Riccardo