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
Added the log about how to import to NetBeans.
Updated links.
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