Merge pull request #806 from zeha/f/old-changelog

rename ChangeLog to ChangeLog.old
add make dist for travis
Remove ChangeLog from make dist, debian-pdns/rules
fix escaping txt, closes #805 which turns out to have been fixed with the txt escaping fix for recursor
Merge branch 'f/old-changelog' of github.com:zeha/pdns
Merge branch 'travis-makedist'