New option parsing infrastructure (doesn't use getopt).  Hook it up to
existing applets.  Still a bit buggy, but bits of it work.
diff --git a/lib/lib.h b/lib/lib.h
index d013af9..013e491 100644
--- a/lib/lib.h
+++ b/lib/lib.h
@@ -13,6 +13,14 @@
 	char str[0];
 };
 
+struct arg_list {
+	struct arg_list *next;
+	char *arg;
+};
+
+// args.c
+void get_optflags(void);
+
 // functions.c
 void verror_msg(char *msg, int err, va_list va);
 void error_msg(char *msg, ...);