fix(build): Use gai_strerrorA not gai_strerror on Windows

* Explicitly call gai_strerrorA (for Windows builds), so that the code work correctly in 32bit or 64bit builds.

* Implement GAI_STRERROR macro to deal with Windows vs. Non-Windows compiles for 64-bit.

* make usocket.c consistent with other modules that call macro GAI_STRERROR

* Use different name not just different case for macro wrapping function

Co-authored-by: Caleb Maclennan <caleb@alerque.com>

src/usocket.c

@@ -449,6 +449,6 @@ const char *socket_gaistrerror(int err) {
         case EAI_SERVICE: return PIE_SERVICE;
         case EAI_SOCKTYPE: return PIE_SOCKTYPE;
         case EAI_SYSTEM: return strerror(errno);
-        default: return gai_strerror(err);
+        default: return LUA_GAI_STRERROR(err);
     }
 }