Add -XstartOnFirstThread and -Djava.library.path

Natives/JavaLauncher.c

@@ -66,6 +66,8 @@ int launchJVM(int argc, char *argv[]) {
     // Check if JVM restarts
     if (!started) {
         margv[margc++] = "/usr/lib/jvm/java-16-openjdk/bin/java";
+        margv[margc++] = "-XstartOnFirstThread";
+        margv[margc++] = "Djava.library.path=/Applications/PojavLauncher.app/Frameworks";
         debug("Reading custom JVM args (overrideargs.txt)");
         char jvmargs[10000];
         FILE* argsFile = fopen(args_path, "r");