Merge commit '73adc26dba4be1d9da34a7f0907cb7b12f10c909' into HEAD

* commit '73adc26dba4be1d9da34a7f0907cb7b12f10c909':
  Cherry pick of WebKit.org revision r58323. Improves documentation for the TouchStationary handler after discussions in webkit bug 37609.
  Removing the TouchStationary state from PlatformTouchPoint resulted in unforseen build problems upstream at webkit.org so it was reverted.
Update to use system/core/include 4.2.2_r1.2

Conflicts:
	WebCore/loader/ProgressTracker.cpp
	WebCore/platform/graphics/gtk/MediaPlayerPrivateGStreamer.cpp
	WebKit/mac/WebView/WebDataSource.mm
	WebKit/mac/WebView/WebHTMLView.mm

Conflicts:
	WebKit/android/nav/WebView.cpp
Update to use binary.mk 4.3_r2.1