Correct two configure tests that fail whenn g++ is used instead of gcc.
--- configure.orig	2010-05-30 16:00:03.000000000 +0200
+++ configure	2010-05-30 16:00:33.000000000 +0200
@@ -48547,7 +48547,10 @@
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 
+#include <sys/types.h> /* for setresuid(2) on FreeBSD */
+#include <stdio.h> /* for perror(3) on FreeBSD */
 #include <stdlib.h>
+#include <unistd.h> /* for setresuid(2) on FreeBSD */
   int main(int argc, char **argv) {
     if(setresuid(-1,-1,-1)) {
       perror("setresuid:");
@@ -48632,7 +48635,7 @@
 int main(int argc, char **argv)
 {
     int size = 20;
-    char *str = malloc(size);
+    char *str = (char *)malloc(size);
     memset(str, 'x', size);
     strnstr(str, "fubar", size);
     return 0;