Export ol.Object's getKeys function
Dispatch a change event when the geometry is set

Fixes #2016
Use goog.array.contains instead of goog.array.indexOf
Merge pull request #2010 from fredj/goog.array.contains

Use goog.array.contains instead of goog.array.indexOf
Merge pull request #2014 from bartvde/getkeys

export getKeys on ol.Object (r=@elemoine,@fredj)
Merge pull request #2017 from fredj/feature-setgeom-change

Dispatch a change event when the geometry is set
Add ol.structs.RBush#getIterator function