Add missing include file.

Thanks to Paul Hargrove for spotting it.

cmr=v1.7.4:reviewer=jsquyres

This commit was SVN r29998.

ompi/mca/sharedfp/sm/sharedfp_sm_file_open.c

@@ -24,6 +24,9 @@
 #if HAVE_LIBGEN_H
 #include <libgen.h>
 #endif
+#if HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
 
 #include "sharedfp_sm.h"