Forbid b{copy,zero,cmp}(). Don't include <strings.h> for <string.h>

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12996

module/icp/algs/edonr/edonr.c

@@ -35,7 +35,7 @@
  * cryptographic use. Users of Edon-R must interface directly to this module.
  */
 
-#include <sys/strings.h>
+#include <sys/string.h>
 #include <sys/edonr.h>
 #include <sys/debug.h>
 

module/icp/algs/skein/skein_impl.h

@@ -25,7 +25,7 @@
 #define	_SKEIN_IMPL_H_
 
 #include <sys/skein.h>
-#include <sys/strings.h>
+#include <sys/string.h>
 #include "skein_impl.h"
 #include "skein_port.h"