Turning @tschaub's FeatureAgent into an event extension.

See http://trac.osgeo.org/openlayers/browser/sandbox/tschaub/select/lib/OpenLayers/FeatureAgent.js. Tests are still missing, but this already works on mobile devices and with Canvas layers. Another possible task would be to make the SelectFeature control use this instead of the Feature handler - then we could get rid of the RootContainer layer for multiple layer selection.
Merge branch 'master' of git://github.com/m1k3ry4n/openlayers into feature-events
Fixing tests

Test iframe needs to be visible for these tests to work.
Do not take hidden layers into account, not even with Canvas
Merge branch 'fcapidoc' of https://github.com/m1k3ry4n/openlayers into feature-events
Merge branch 'fcedits20130527' of git://github.com/m1k3ry4n/openlayers into feature-events

Conflicts:
	tests/Events/featureclick.html
Also log hover events
Fixing whitespace and docs
Release notes about featureclick
Merge pull request #174 from ahocevar/feature-events

Turning @tschaub's FeatureAgent into an event extension. r=@bartvde
Merge branch 'master' into graphicfill

Updating graphicfill branch with up to date master.