ircd: add main.c stub executable

ircd/main.c

@@ -0,0 +1,9 @@
+/* This file is in the public domain. */
+
+extern int charybdis_main(int argc, const char *argv[]);
+
+int
+main(int argc, const char *argv[])
+{
+	return charybdis_main(argc, argv);
+}