Rename DATADIR to PKGDATADIR to fix win32 build

* src/Makefile.am src/cpu/cpu_map.c: rename in Makefile and in the
  cpu map loading code

src/Makefile.am

@@ -16,7 +16,7 @@ INCLUDES =							\
 		-DSBINDIR=\""$(sbindir)"\"			\
 		-DSYSCONF_DIR="\"$(sysconfdir)\""		\
 		-DLOCALEBASEDIR=\""$(datadir)/locale"\"		\
-		-DDATADIR=\""$(pkgdatadir)"\"			\
+		-DPKGDATADIR=\""$(pkgdatadir)"\"		\
 		-DLOCAL_STATE_DIR=\""$(localstatedir)"\"	\
 		-DGETTEXT_PACKAGE=\"$(PACKAGE)\"		\
 		$(WARN_CFLAGS)					\

src/cpu/cpu_map.c

@@ -30,7 +30,7 @@
 
 #define VIR_FROM_THIS VIR_FROM_CPU
 
-#define CPUMAPFILE DATADIR "/cpu_map.xml"
+#define CPUMAPFILE PKGDATADIR "/cpu_map.xml"
 
 
 static int load(xmlXPathContextPtr ctxt,