fix compile on Darwin

tools/cpio/src/cpio.c

@@ -49,7 +49,6 @@
 #include <sys/wait.h>
 #include <fcntl.h>
 #include <stdlib.h>
-#include <malloc.h>
 #include <string.h>
 #include <unistd.h>
 #include <signal.h>

tools/cpio/src/ib_alloc.c

@@ -28,7 +28,6 @@
 #include	<string.h>
 #include	<errno.h>
 #include	<stdlib.h>
-#include	<malloc.h>
 
 #include	"memalign.h"
 #include	"iblok.h"

tools/cpio/src/sigset.c

@@ -21,7 +21,7 @@
  */
 /*	Sccsid @(#)sigset.c	1.7 (gritter) 1/22/06	*/
 
-#include <features.h>
+#include <sys/param.h>
 #if defined (__FreeBSD__) || defined (__dietlibc__) || defined (__NetBSD__) || \
 	defined (__OpenBSD__) || defined (__DragonFly__) || defined (__APPLE__) || \
 	defined (__UCLIBC__)

tools/cpio/src/sigset.h

@@ -21,7 +21,7 @@
  */
 /*	Sccsid @(#)sigset.h	1.9 (gritter) 1/22/06	*/
 
-#include <features.h>
+#include <sys/param.h>
 #if defined (__FreeBSD__) || defined (__dietlibc__) || defined (__NetBSD__) || \
 	defined (__OpenBSD__) || defined (__DragonFly__) || defined (__APPLE__) || \
 	defined (__UCLIBC__)