As with ipf(8), give ippool(8) the ability to load IP pools from multiple

files. This allows for loading, during the same invocation of ippool, of
multiple sources of input using multiple tools to concurrently maintain the
files such as fail2ban, macro preprocessors, and manually.

MFC after:	1 week

contrib/ipfilter/man/ippool.8

@@ -12,7 +12,7 @@ ippool \- user interface to the IPFilter pools
 -A [-dnv] [-m <name>] [-o <role>] [-S <seed>] -t <type>
 .br
 .B ippool
--f <file> [-dnuv]
+-f <file> [-dnuv] [-f <file [-dnuv]] ...
 .br
 .B ippool
 -F [-dv] [-o <role>] [-t <type>]

contrib/ipfilter/tools/ippool.c

@@ -381,13 +381,17 @@ loadpoolfile(argc, argv, infile)
 {
 	int c;
 
-	while ((c = getopt(argc, argv, "dnuv")) != -1)
+	while ((c = getopt(argc, argv, "dnuvf:")) != -1)
 		switch (c)
 		{
 		case 'd' :
 			opts |= OPT_DEBUG;
 			ippool_yydebug++;
 			break;
+		case 'f' :
+			if (loadpoolfile(argc, argv, optarg) != 0)
+				return(-1);
+			break;
 		case 'n' :
 			opts |= OPT_DONOTHING|OPT_DONTOPEN;
 			break;