android-daemon: Protect ApiDatabase against double close
android-daemon: Avoid starting the daemon with switch = off
daemon: Remove unnecessary static reference to base router
daemon: Remove transferTo() method of BundleCore
ibrdtn: Improved expiration checking

Remove deprecated expiration functions
Add isExpired() method for MetaBundle objects
daemon: Use new expiration functions
ibrdtn: Unnecessary brackets removed
daemon: Let the router register itself to the bundle core