* nis/yp_xdr.c: Add libnsl_hidden_def for xdr_ypresp_master.

* nis/yp_xdr.c: Add libnsl_hidden_def for xdr_ypresp_

	* include/rpcsvc/yp.h: Add libnsl_hidden_proto for xdr_ypresp_master.

	* nis/yp_xdr.c: Add libnsl_hidden_def for xdr_ypbind_resp.
	* include/rpcsvc/yp.h: Add libnsl_hidden_proto for xdr_ypbind_resp.

	* nis/nis_xdr.c: Add libnsl_hidden_def for xdr_cback_data.
	* include/rpcsvc/nis_callback.h: Add libnsl_hidden_proto for
	xdr_cback_data.

	* nis/ypupdate_xdr.c: Add libnsl_hidden_def for xdr_ypupdate_args.
	* include/rpcsvc/ypupd.h: Add libnsl_hidden_proto for
	xdr_ypupdate_args.

	* nis/yp_xdr.c: Add libnsl_hidden_def for xdr_ypresp_order.
	* include/rpcsvc/yp.h: Add libnsl_hidden_proto for xdr_ypresp_order.

	* nis/yp_xdr.c: Add libnsl_hidden_def for xdr_ypresp_maplist.
	* include/rpcsvc/yp.h: Add libnsl_hidden_proto for xdr_ypresp_maplist.

	* nis/nis_xdr.c: Add libnsl_hidden_def for xdr_obj_p.
	* include/rpcsvc/nis_callback.h: New file.

	* nis/yp_xdr.c: Add libnsl_hidden_def for xdr_ypresp_val.
	* include/rpcsvc/yp.h: Add libnsl_hidden_proto for xdr_ypresp_val.

	* nis/yp_xdr.c: Add libnsl_hidden_def for xdr_ypreq_nokey.
	* include/rpcsvc/yp.h: Add libnsl_hidden_proto for xdr_ypreq_nokey.

	* nis/yp_xdr.c: Add libnsl_hidden_def for xdr_ypmaplist.
	* include/rpcsvc/yp.h: Add libnsl_hidden_proto for xdr_ypmaplist.

	* nis/yp_xdr.c: Add libnsl_hidden_def for xdr_ypreq_nokey.
	* include/rpcsvc/yp.h: Add libnsl_hidden_proto for xdr_ypreq_nokey.