res_search: fix for aarch64

On linux_aarch64 `res_search` is `__res_search@GLIBC_2.17`, which is
different from the x86_64 counterpart `__res_search@GLIBC_2.2.5`.

Also fix tests.

test/glibc_hacks/BUILD

@@ -0,0 +1,22 @@
+load("@bazel-zig-cc//rules:platform.bzl", "platform_binary")
+
+cc_binary(
+    name = "main",
+    srcs = ["main.c"],
+)
+
+[
+    (
+        platform_binary(
+            name = "main_{}".format(name),
+            src = "main",
+            platform = platform,
+        ),
+    )
+    for name, platform in [
+        ("linux_amd64_musl", "//libc_aware/platform:linux_amd64_musl"),
+        ("linux_amd64_gnu.2.19", "//libc_aware/platform:linux_amd64_gnu.2.19"),
+        ("linux_amd64_gnu.2.28", "//libc_aware/platform:linux_amd64_gnu.2.28"),
+        ("linux_arm64_musl", "//libc_aware/platform:linux_arm64_musl"),
+    ]
+]

test/glibc_hacks/main.c

@@ -0,0 +1,13 @@
+// This file tests that problematic functions (glibc-hacks) work.
+// Also see https://github.com/ziglang/zig/issues/9485
+
+#define _FILE_OFFSET_BITS 64
+#include <unistd.h>
+#include <fcntl.h>
+#include <resolv.h>
+#include <stdio.h>
+
+int main() {
+    printf("Your lucky numbers are %p and %p\n", fcntl, res_search);
+    return 0;
+}