Add Mindroid benchmark

[mavam]

Mindroid seems to offer actor-like semantics as well. It would be nice to compare against it at some point. Here is a hello world example:

#include <stdio.h>
#include "mindroid/os/Message.h"
#include "mindroid/os/Handler.h"
#include "mindroid/os/LooperThread.h"

using namespace mindroid;

static const int SAY_HELLO = 0;
static const int SAY_WORLD = 1;
static const int QUIT = 2;

class HelloHandler : public Handler
{
public:
  HelloHandler(const sp<Handler>& worldHandler) : 
    mWorldHandler(worldHandler), mCounter(0) {}

  virtual void handleMessage(const sp<Message>& msg) {
    switch (msg->what) {
      case SAY_HELLO:
        mCounter++;
        if (mCounter <= 1000) {
          printf("Hello ");
          sp<Message> sayWorld =
            mWorldHandler->obtainMessage(SAY_WORLD);
          sayWorld->metaData()->putObject("SayHello",
            obtainMessage(SAY_HELLO));
          sayWorld->sendToTarget();
        } else {
          mWorldHandler->obtainMessage(QUIT)
            ->sendToTarget();
          Looper::myLooper()->quit();
        }
        break;
    }
  }

private:
  sp<Handler> mWorldHandler;
  int mCounter;
};

class WorldHandler : public Handler
{
public:
  virtual void handleMessage(const sp<Message>& msg) {
    switch (msg->what) {
      case SAY_WORLD:
        printf("World!\n");
        msg->metaData()
          ->getObject<Message>("SayHello")
          ->sendToTarget();
        break;
      case QUIT:
        Looper::myLooper()->quit();
        break;
    }
  }
};

int main() {
  sp< LooperThread<WorldHandler> > wlt =
    new LooperThread<WorldHandler>();
  wlt->start();

  Looper::prepare();
  sp<Handler> hh = new HelloHandler(wlt->getHandler());
  hh->obtainMessage(SAY_HELLO)->sendToTarget();
  Looper::loop();

  return 0;
}

Source: http://himmele.blogspot.de/2012/11/concurrent-hello-world-in-go-erlang.html