Added a test for wxUSE_DATAOBJ to wxDFB which doesn't support it.

This is just one of many, many things not supported by wxDFB but check for at
least this one as it prevents even the precompiled header from being created.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@70565 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/dfb/chkconf.h

@@ -30,4 +30,13 @@
 #   endif
 #endif
 
+#if wxUSE_DATAOBJ
+#   ifdef wxABORT_ON_CONFIG_ERROR
+#       error "wxDataObject not supported in wxDFB"
+#   else
+#       undef wxUSE_DATAOBJ
+#       define wxUSE_DATAOBJ 0
+#   endif
+#endif
+
 #endif /* _WX_DFB_CHKCONF_H_ */