antithread, failtest: use ccan/err instead of err.h.

ccan/antithread/_info

@@ -91,6 +91,7 @@ int main(int argc, char *argv[])
 
 	if (strcmp(argv[1], "depends") == 0) {
 		printf("ccan/alloc\n");
+		printf("ccan/err\n");
 		printf("ccan/list\n");
 		printf("ccan/noerr\n");
 		printf("ccan/read_write_all\n"); /* For tests */

ccan/antithread/antithread.c

@@ -10,8 +10,8 @@
 #include <signal.h>
 #include <errno.h>
 #include <assert.h>
-#include <err.h>
 #include "antithread.h"
+#include <ccan/err/err.h>
 #include <ccan/noerr/noerr.h>
 #include <ccan/talloc/talloc.h>
 #include <ccan/read_write_all/read_write_all.h>

ccan/failtest/_info

@@ -66,6 +66,7 @@ int main(int argc, char *argv[])
 	if (strcmp(argv[1], "depends") == 0) {
 		printf("ccan/build_assert\n");
 		printf("ccan/compiler\n");
+		printf("ccan/err\n");
 		printf("ccan/hash\n");
 		printf("ccan/htable\n");
 		printf("ccan/read_write_all\n");

ccan/failtest/failtest.c

@@ -5,7 +5,6 @@
 #include <stdio.h>
 #include <stdarg.h>
 #include <ctype.h>
-#include <err.h>
 #include <unistd.h>
 #include <poll.h>
 #include <errno.h>
@@ -17,6 +16,7 @@
 #include <sys/resource.h>
 #include <signal.h>
 #include <assert.h>
+#include <ccan/err/err.h>
 #include <ccan/time/time.h>
 #include <ccan/read_write_all/read_write_all.h>
 #include <ccan/failtest/failtest_proto.h>