Miscellaneous:

* lib/prototypes, libmisc/basename.c (Basename): Input is a
	constant string.
	* lib/prototypes.h, lib/spawn.h, lib/spawn.c, src/userdel.c,
	lib/nscd.c, lib/Makefile.am: Delete spawn.h. Move from spawn.h to
	prototypes.h.
	* src/userdel.c: Remove unused variables.
	* lib/nscd.c: Remove unused header files.
	* lib/nscd.c: Add the program name to error messages.
	* lib/nscd.c: Indicate when nscd does not terminate normally (signal).
	* lib/spawn.c: Updated header.
	* lib/spawn.c: Flush stdout and stderr to avoid inheriting from
	ongoing buffers.
	* lib/spawn.c: Avoid implicit conversion of pointer to boolean.
	* lib/spawn.c: Replace perror by a complete message.
	* lib/spawn.c: Continue to wait for the child if another child
	terminates.
	* lib/prototypes.h: The name field from cleanup_info_mod is a
	constant string. (username).

src/userdel.c

@@ -59,7 +59,6 @@
 #ifdef	SHADOWGRP
 #include "sgroupio.h"
 #endif				/* SHADOWGRP */
-#include "spawn.h"
 #ifdef WITH_TCB
 #include <tcb.h>
 #include "tcbfuncs.h"
@@ -630,7 +629,6 @@ static void user_cancel (const char *user)
 {
 	const char *cmd;
 	const char *argv[3];
-	pid_t pid, wpid;
 	int status;
 
 	cmd = getdef_str ("USERDEL_CMD");