WebKitGTK+ 2.2.3 released!

This is a bug fix release in the stable 2.2 series.

Render AC layers also when using GTK+ 2 in WebKit1.
Avoid extra copy when drawing images in cairo backend.
Fix return value of webkit_web_view_get_view_source_mode() in WebKit1.
Fix scrolling in combo boxes when the dropdown menu is larger than the screen.
Remove Chromium as user agent and claim to be Safari in OS X.
Fix a crash in the WebProcess when visiting www.pressure.co.uk.
Fix a crash JavaScriptcore with certain Google Drive documents.
Fix a crash in JavaScriptcore when running peacekeeper benchmark in 32 bit platforms.
Fix the build with freetype >= 2.5.1.

Thanks to all the contributors who made possible this release.