Change the option setting command line switch to "-pkeyopt" to avoid confusion

with algorithm parameters.

apps/genpkey.c

@@ -150,7 +150,7 @@ int MAIN(int argc, char **argv)
 			if (!init_gen_str(bio_err, &ctx, *(++args),e, do_param))
 				goto end;
 			}
-		else if (strcmp(*args,"-param") == 0)
+		else if (strcmp(*args,"-pkeyopt") == 0)
 			{
 			if (!args[1])
 				goto bad;

apps/pkeyutl.c

@@ -180,7 +180,7 @@ int MAIN(int argc, char **argv)
 			pkey_op = EVP_PKEY_OP_ENCRYPT;
 		else if(!strcmp(*argv, "-decrypt"))
 			pkey_op = EVP_PKEY_OP_DECRYPT;
-		else if (strcmp(*argv,"-param") == 0)
+		else if (strcmp(*argv,"-pkeyopt") == 0)
 			{
 			if (--argc < 1)
 				badarg = 1;