add ip address to messages where appropriate
correct variable name typo
fixed more typos
Merge branch 'master' of github.com:ag4ve/fwknop

Pull in forked upstream
Merge remote-tracking branch 'ag4ve/master'

(Shawn Wilson) This adds better source IP logging for fwknopd log messages.
Closes #70.
Merge remote-tracking branch 'upstream/master'