Merge branch 'master' of https://github.com/libgdx/libgdx into various
cumulative distribution
Proper support for onAttachedToWindow and onDetachedFromWindow methods on Android 2.x
Added Jdoc
Merge pull request #1566 from jtakakura/master

Added about supporting for NetBeans.
Added hashCode to Quaternion

Quaternion was only overriding `equals()`, but not `hashCode()`. The methods are generated with Eclipse and slightly changed to make them shorter and keep the same behaviour of the old `equals()`.
Update viewport for Stage constructor that doesn't take a viewport.
Merge branch 'origin/master'
fixed issue #1568
Merge pull request #1549 from lordjone/math

Math addition
Added function to add an asset to the AssetManager
Added function to retrieve all the assets of a give type
C-style comments for JsonReader.

closes #1571

```
System.out.println(new JsonReader().parse(" /*x*/ { /*x*/ a: /*x*/ 123 /*x*/ } /*x*/ "));
System.out.println(new JsonReader().parse("/*x*/{/*x*/a:/*x*/123/*x*/}/*x*/"));
System.out.println(new JsonReader().parse(" //x\n { //x\n a: //x\n 123 //x\n } //x\n "));
System.out.println(new JsonReader().parse("//x\n{//x\na://x\n123//x\n}//x\n"));
```
Merge branch 'origin/master'
Added flick feature to scrollpane.
Added fling gesture to scrollpane.
Added fling gesture to Scrollpane.
Update CHANGES
Merge pull request #1574 from karan1213/master

Added new method fling(...) in scrollpane.java
Merge pull request #1573 from karan1213/patch-1

Update CHANGES
Fix constructor to match core

Fixes #1577