(util_chdir): New function.

 /* GNU Mailutils -- a suite of utilities for electronic mail
    Copyright (C) 1999, 2001, 2002, 2003, 2004, 
-   2005 Free Software Foundation, Inc.
+   2005, 2006 Free Software Foundation, Inc.
 
    GNU Mailutils is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -1290,3 +1290,11 @@ util_run_events (int old_state, int new_state)
     }
 }
   
+void
+util_chdir (const char *homedir)
+{
+  int rc = chdir (homedir);
+  if (rc)
+    mu_error ("Cannot change to home directory `%s': %s",
+	      homedir, mu_strerror (errno));
+}