Fix cygw32 build break with dbus compilation

src/ChangeLog

@@ -1,3 +1,9 @@
+2012-10-15  Daniel Colascione  <dancol@dancol.org>
+
+	* dbusbind.c: Fix cygw32 build break when compiling with dbus
+	enabled by undefining the symbol "interface", which the platform
+	headers define to something incompatible.
+
 2012-10-14  Daniel Colascione  <dancol@dancol.org>
 
 	* image.c (init_tiff_functions, init_imagemagick_functions)

src/dbusbind.c

@@ -32,6 +32,10 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #define DBUS_NUM_MESSAGE_TYPES 5
 #endif
 
+#ifdef interface
+#undef interface
+#endif
+
 
 /* Subroutines.  */
 static Lisp_Object Qdbus_init_bus;