freebsd-userspace: All files in old libnetworking/libc now present

But they don't all compile. Multiple issues left to address.

freebsd-userspace/lib/libc/resolv/res_private.h

@@ -0,0 +1,24 @@
+#include "port_before.h"
+
+#ifndef res_private_h
+#define res_private_h
+
+struct __res_state_ext {
+	union res_sockaddr_union nsaddrs[MAXNS];
+	struct sort_list {
+		int     af;
+		union {
+			struct in_addr  ina;
+			struct in6_addr in6a;
+		} addr, mask;
+	} sort_list[MAXRESOLVSORT];
+	char nsuffix[64];
+	char nsuffix2[64];
+};
+
+extern int
+res_ourserver_p(const res_state statp, const struct sockaddr *sa);
+
+#endif
+
+/*! \file */