build: Move sources into src/ again

This is necessary if we want to build when srcdir == builddir,
otherwise we blow up because "ostree" is a source directory and a
binary.

src/libotutil/ot-opt-utils.c

@@ -0,0 +1,38 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
+ *
+ * Copyright (C) 2011 Colin Walters <walters@verbum.org>
+ *
+ * This 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 2 of the License, or (at your option) any later version.
+ *
+ * This 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 this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Colin Walters <walters@verbum.org>
+ */
+
+#include "config.h"
+
+#include <gio/gio.h>
+
+#include <string.h>
+
+#include "otutil.h"
+
+void
+ot_util_usage_error (GOptionContext *context, const char *message, GError **error)
+{
+  gchar *help = g_option_context_get_help (context, TRUE, NULL);
+  g_printerr ("%s\n", help);
+  g_free (help);
+  g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED, message);
+}