Add <argp.h>.

libc/include/argp.h

@@ -0,0 +1,36 @@
+/*******************************************************************************
+
+    Copyright(C) Jonas 'Sortie' Termansen 2013.
+
+    This file is part of the Sortix C Library.
+
+    The Sortix C Library is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or (at your
+    option) any later version.
+
+    The Sortix C Library is distributed in the hope that it will be useful, but
+    WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+    or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
+    License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
+
+    argp.h
+    Argument parsing facility.
+
+*******************************************************************************/
+
+#ifndef INCLUDE_ARGP_H
+#define INCLUDE_ARGP_H
+
+#include <sys/cdefs.h>
+
+#include <errno.h>
+
+__BEGIN_DECLS
+
+__END_DECLS
+
+#endif