Update Lighting messages to support Contact ValueSelector as existing code for contact items appears to be unreachable.
Fixed compilation problem
Merge pull request #1563 from engineergreen/rfxcom-fix-contact

[RFXCOM] LIGHTING protocols - Fix support for Contact Items
Merge pull request #1631 from gerrieg/xmpp

xmpp: Fixed compilation problem
Merge branch 'master' of https://github.com/openhab/openhab into homematic