libxtables: prefix/order - modprobe and xtables.ko loading

This change affects:
	load_xtables_ko -> xtables_load_ko
	modprobe_program -> xtables_modprobe_program
Now uses bool for the "quiet" flag.

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
diff --git a/ip6tables-restore.c b/ip6tables-restore.c
index a84c2e3..097711f 100644
--- a/ip6tables-restore.c
+++ b/ip6tables-restore.c
@@ -12,6 +12,7 @@
 
 #include <getopt.h>
 #include <sys/errno.h>
+#include <stdbool.h>
 #include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -64,7 +65,7 @@
 
 	if (!handle) {
 		/* try to insmod the module if iptc_init failed */
-		load_xtables_ko(modprobe_program, 0);
+		xtables_load_ko(xtables_modprobe_program, false);
 		handle = ip6tc_init(tablename);
 	}
 
@@ -165,7 +166,7 @@
 				noflush = 1;
 				break;
 			case 'M':
-				modprobe_program = optarg;
+				xtables_modprobe_program = optarg;
 				break;
 		}
 	}