title: Issue with support:design:23.0.0 and setOnTabSelectedListener with tab custom view
body: <p>With android.support:design:23.0.0. setOnTabSelectedListener is triggered only when i click on a tab but it doesn't get triggered with the ViewPager when i swipe it.</p>
  
  <p>let me give you an example:</p>
  
  <pre><code> public void setTabs() {
  
      tabs = (TabLayout) findViewById(R.id.tabs);
      tabs.setupWithViewPager(pager);
  
      for (int i = 0; i &lt; tabs.getTabCount(); i++) {
          TabLayout.Tab tab = tabs.getTabAt(i);
          tab.setCustomView(pagerAdapter.getTabView(i));
      }
  
    tabs.setOnTabSelectedListener(new TabLayout.ViewPagerOnTabSelectedListener(pager) {
          @Override
          public void onTabSelected(TabLayout.Tab tab) {
  
              super.onTabSelected(tab);
              tabPosition = tab.getPosition();
  
              Toast.makeText(getApplicationContext(), ""+tabPosition,Toast.LENGTH_SHORT).show();
  
              if (tabPosition == 0) {
  
              }
              if (tabPosition == 1) {
  
              }
              if (tabPosition == 2) {
  
              }
              if (tabPosition == 3) {
  
              }
          }
  
          @Override
          public void onTabUnselected(TabLayout.Tab tab) {
          }
  
          @Override
          public void onTabReselected(TabLayout.Tab tab) {
          }
      });
  }
  </code></pre>
  
  <p>getTabView method from pagerAdapter:</p>
  
  <pre><code> public View getTabView(int position) {
  
          View v = LayoutInflater.from(getApplicationContext()).inflate(R.layout.custom_tab, null);
          // TextView tv = (TextView) v.findViewById(R.id.tabTextView);
          // tv.setText(tabTitles[position]);
          ImageView img = (ImageView) v.findViewById(R.id.tabImageView);
          img.setImageResource(imageResId[position]);
  
          return v;
      }
  </code></pre>
  
  <p>Toast isn't showing on swipe, only on click. It works fine with the old 22.2.1 revison. What is causing this problem? Thanks.</p>