deps: use allyourcodebase build wrappers instead of vendored deps

This updates the nats.c library version to 3.8.2 and the libressl
version to 3.9.2. It's more build system than ever.

src/win-crosshack.c

@@ -1,44 +0,0 @@
-// These functions are taken from MinGW-w64.
-// In theory, they have been released into the public domain.
-
-#include <winsock2.h>
-#include <ws2tcpip.h>
-
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-#undef WIN32_LEAN_AND_MEAN
-
-// this is supposed to be inlined but apparently there is a flag causing it to not be
-// inlined? zig mingw may be too old
-PVOID WINAPI RtlSecureZeroMemory(PVOID ptr,SIZE_T cnt)
-{
-  volatile char *vptr = (volatile char *)ptr;
-#ifdef __x86_64
-  __stosb ((PBYTE)((DWORD64)vptr),0,cnt);
-#else
-  while (cnt != 0)
-    {
-      *vptr++ = 0;
-      cnt--;
-    }
-#endif /* __x86_64 */
-  return ptr;
-}
-
-// zig doesn't compile the parts of mingw that contain this for some reason
-WCHAR *gai_strerrorW(int ecode)
-{
-    DWORD dwMsgLen __attribute__((unused));
-    static WCHAR buff[GAI_STRERROR_BUFFER_SIZE + 1];
-    dwMsgLen = FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS|FORMAT_MESSAGE_MAX_WIDTH_MASK,
-                  NULL, ecode, MAKELANGID(LANG_NEUTRAL,SUBLANG_DEFAULT), (LPWSTR)buff,
-                  GAI_STRERROR_BUFFER_SIZE, NULL);
-    return buff;
-}
-
-char *gai_strerrorA(int ecode)
-{
-    static char buff[GAI_STRERROR_BUFFER_SIZE + 1];
-    wcstombs(buff, gai_strerrorW(ecode), GAI_STRERROR_BUFFER_SIZE + 1);
-    return buff;
-}