Fix for issue in 'mouse clicked' event generation introduced by Window doing input propagation.
Fix for issue in 'mouse clicked' event generation introduced by Window doing input propagation.

cbeck88/cegui-mirror,RealityFactory/CEGUI,cbeck88/cegui-mirror,arkana-fts/cegui,RealityFactory/CEGUI,cbeck88/cegui-mirror,cbeck88/cegui-mirror,cbeck88/cegui-mirror,arkana-fts/cegui,arkana-fts/cegui,arkana-fts/cegui,RealityFactory/CEGUI,RealityFactory/CEGUI,arkana-fts/cegui,RealityFactory/CEGUI