added mfile_name string swap back to batch_strswap.m

batch/misc_func/batch_strswap.m

@@ -156,6 +156,8 @@ end
 tmp_histstr=key_strswap(tmp_histstr,'batch_dfn',g.datafname);
 % batch_dfp
 tmp_histstr=key_strswap(tmp_histstr,'batch_dfp',g.datafpath);
+% batch_dfn
+tmp_histstr=key_strswap(tmp_histstr,'mfile_name',g.mfile_name);
 % current_dir
 tmp_histstr=key_strswap(tmp_histstr,'batch_cd',cd);
 % log