added a method to get fixtures count, primarily for quick stats
Implement pan/pitch/volume/loop
Merge pull request #2596 from Tom-Ski/iossound

Implement pan/pitch/volume/loop fix #2563
Javadocs
Fixed postRunnable for LwjglCanvas.
Fix potential null pointer in fragment's immersive

mode.

Technical Description:
- When immersive mode was implemented in fragments, it worked by getting
the parent activity's application window's decor view.
- Sometimes getActivity() can return null.
- This patch prevents the application from crashing if the view is null,
but also uses AndroidGraphics' view for immersive mode.
- Android fragment starter now uses immersive mode by default like
Android test starter.
- Better exception logging
This patch resolves #2602
Merge pull request #2603 from Unkn0wn0ne/immersive-mode-bug2602

Fix potential null pointer in Android fragment's immersive mode implementation
Fixed Oracle broken link

The link to the code converter was broken, Oracle changed a few of the digits after the 'codeconvtoc-'
Merge pull request #2607 from Deathsbreed/patch-2

Fixed Oracle broken link
Merge pull request #2543 from jberberick/master

added a couple fixture related methods on Box2d World
Merge remote-tracking branch 'origin/master'
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