Fix for #300 - added sort by reference support to b2body.
Merge pull request #301 from Cocos2DXNA/ISSUE_300

Fix for #300 - added sort by reference support to b2body.
More optimizations in the collision code and fix for sensor test.
Merge branch 'master' of https://github.com/Cocos2DXNA/cocos2d-xna
fixed friction bag
fixed b2Distance
Merge pull request #302 from Cocos2DXNA/SENSOR_TEST_FIX

Sensor test fix
Merge branch 'master' of https://github.com/Cocos2DXNA/cocos2d-xna
Merge pull request #303 from gena-m/master

fixed friction
fixed b2Distance
added memory and GC state labels
Merge pull request #304 from gena-m/master

added memory and GC state labels
fixed test compilation
Update AssemblyInfo.cs description
Add box2d tests to fix compile errors
Merge pull request #305 from mono/master

Update AssemblyInfo.cs description
removed files that we don't use or need.
fix in RayCast and EdgeShapes tests
Fix WindowsDX template to output correct name instead of over writing WindowsGL.
changed tests to use update() instead of their own tick
Add support to load native plist document