Test out xfsdump'ing of a large file with size greater

than 32 bits - to test out the libhandle O_LARGEFILE support.

common.dump

@@ -530,6 +530,17 @@ _do_create_dumpdir_fill()
     cd $here
 }
 
+_create_dumpdir_largefile()
+{
+    _wipe_fs
+    mkdir -p $dump_dir ||\
+	_error "cannot mkdir \"$dump_dir\""
+    _largesize=4294967297
+    _largefile=$dump_dir/largefile
+    echo "dd a largefile at offset $_largesize"
+    dd if=/dev/zero of=$_largefile bs=1 seek=$_largesize count=10 2>&1
+    _stable_fs
+}	
 
 _create_dumpdir_fill()
 {