Fix a build error on Solaris. MAXHOSTNAMELEN is defined in netdb.h.

This commit was SVN r16268.

orte/mca/odls/base/odls_base_state.c

@@ -9,6 +9,7 @@
  *                         University of Stuttgart.  All rights reserved.
  * Copyright (c) 2004-2005 The Regents of the University of California.
  *                         All rights reserved.
+ * Copyright (c) 2007      Sun Microsystems, Inc.  All rights reserved.
  * $COPYRIGHT$
  * 
  * Additional copyrights may follow
@@ -23,6 +24,9 @@
 #ifdef HAVE_SYS_PARAM_H
 #include <sys/param.h>
 #endif
+#ifdef HAVE_NETDB_H
+#include <netdb.h>
+#endif
 
 #include "opal/util/argv.h"
 #include "opal/util/output.h"