Add build options to control SuS compatability, allows numeric 
option handling to be disabled.
Defaults to enabled, so no changes in default behaviour
diff --git a/coreutils/fold.c b/coreutils/fold.c
index 8f74ed8..ee0fdc2 100644
--- a/coreutils/fold.c
+++ b/coreutils/fold.c
@@ -52,6 +52,8 @@
 	int i;
 	int errs = 0;
 
+
+#ifdef CONFIG_FEATURE_SUSv2_OBSOLETE
 	/* Turn any numeric options into -w options.  */
 	for (i = 1; i < argc; i++) {
 		char const *a = argv[i];
@@ -69,6 +71,7 @@
 			}
 		}
 	}
+#endif
 
 	flags = bb_getopt_ulflags(argc, argv, "bsw:", &w_opt);
 	if (flags & FLAG_WIDTH)