resolver: Resolve hostname to loopback address

We don't currently support loopback adapters, but some ports were trying
to resolve it.

userspace/libraries/LibC/string.cpp

@@ -367,53 +367,6 @@ char* strtok_r(char* __restrict str, const char* __restrict sep, char** __restri
 	return str;
 }
 
-size_t strxfrm(char* __restrict s1, const char* __restrict s2, size_t n)
-{
-	return strxfrm_l(s1, s2, n, __getlocale(LC_COLLATE));
-}
-
-size_t strxfrm_l(char* __restrict s1, const char* __restrict s2, size_t n, locale_t locale)
-{
-	(void)s1;
-	(void)s2;
-	(void)n;
-	ASSERT_NOT_REACHED();
-
-
-	switch (locale)
-	{
-		case LOCALE_INVALID:
-			ASSERT_NOT_REACHED();
-		case LOCALE_POSIX:
-			return strcmp(s1, s2);
-		case LOCALE_UTF8:
-		{
-			const unsigned char* u1 = (unsigned char*)s1;
-			const unsigned char* u2 = (unsigned char*)s2;
-			if (!*u1 || !*u2)
-				return *u1 - *u2;
-
-			wchar_t wc1, wc2;
-			while (*u1 && *u2)
-			{
-				wc1 = BAN::UTF8::to_codepoint(u1);
-				wc2 = BAN::UTF8::to_codepoint(u2);
-				if (wc1 == (wchar_t)BAN::UTF8::invalid || wc2 == (wchar_t)BAN::UTF8::invalid)
-				{
-					errno = EINVAL;
-					return -1;
-				}
-				if (wc1 != wc2)
-					break;
-				u1 += BAN::UTF8::byte_length(*u1);
-				u2 += BAN::UTF8::byte_length(*u2);
-			}
-			return wc1 - wc2;
-		}
-	}
-	ASSERT_NOT_REACHED();
-}
-
 char* strsignal(int signum)
 {
 	static char buffer[128];