Fixed the problem when game has more than 512 pak files

There was a CRT restriction for max open files. The problem has been solved, but build will require updated msvcrt.lib (for OLDCRT).

Author: gildor2

Core/CoreWin32.cpp

@@ -489,6 +489,8 @@ void appInitPlatform()
 	// To catch such exceptions, hook abort() function.
 	signal(SIGABRT, AbortHandler);
 #endif // VSTUDIO_INTEGRATION
+	// Increase standard 512 open file limit. Note: it seems it can't be increased more than 2048 (stackoverflow says).
+	_setmaxstdio(1024);
 }
 
 void appCopyTextToClipboard(const char* text)