LibC: Add a lot of stub implementations for different libc functions

some ports want to link against these, but they are not ever called
based on simple testing

This patch adds stubs for
- openlog
- syslog
- getrusage
- mlock
- mprotect
- getpeername
- shutdown
- tzset
- mktime

userspace/libraries/LibC/sys/socket.cpp

@@ -77,3 +77,17 @@ int setsockopt(int socket, int level, int option_name, const void* option_value,
 {
 	return syscall(SYS_SETSOCKOPT, socket, level, option_name, option_value, option_len);
 }
+
+
+
+#include <BAN/Assert.h>
+
+int getpeername(int, struct sockaddr* __restrict, socklen_t* __restrict)
+{
+	ASSERT_NOT_REACHED();
+}
+
+int shutdown(int, int)
+{
+	ASSERT_NOT_REACHED();
+}