* nis/nss_nis/nis-spwd.c (internal_nis_getspent_r): Remove data

	variable.

	* nis/nss-nis.h: Define response_t and intern_t.  Declare _nis_saveit.
	* nis/nss_nis/nis-pwd.c: Remove response_t and intern_t definition.
	(saveit): Renamed to _nis_saveit.  Take parameter which is pointer
	to the intern_t object.  Change all users.
	* nis/nss_nis/nis-grp.c: Remove response_t, intern_t, and saveit
	definition.  Use _nis_saveit instead of saveit.
	* nis/nss_nis/nis-service.c: Likewise.
	* nis/nss_nis/nis-initgroups.c: Likewise.
	(internal_setgrent): Adjust for buffer handling.
	(internal_getgrent_r): Likewise.
	* nis/nss_nis/nis-rpc.c: Likewise.