LibC: Add stubs that I have locally

I'm not sure if these are used by anything but I would assume so as I
have added them :D

functions added:
- getprotobyname
- open_memstream
- munlock
- lockf
- nice
- crypt
- getsid
- wcstoul

userspace/libraries/LibC/wchar.cpp

@@ -26,6 +26,7 @@ int wcwidth(wchar_t wc)
 
 wchar_t* wcstok(wchar_t* __restrict, const wchar_t* __restrict, wchar_t** __restrict) { ASSERT_NOT_REACHED(); }
 long wcstol(const wchar_t* __restrict, wchar_t** __restrict, int) { ASSERT_NOT_REACHED(); }
+unsigned long wcstoul(const wchar_t* __restrict, wchar_t** __restrict, int) { ASSERT_NOT_REACHED(); }
 int swprintf(wchar_t* __restrict, size_t, const wchar_t* __restrict, ...) { ASSERT_NOT_REACHED(); }
 
 size_t wcrtomb(char* __restrict s, wchar_t ws, mbstate_t* __restrict ps)