git-svn-id: https://svn.verisignlabs.com/jdnssec/tools/trunk@78 4cbd57fe-54e5-0310-bd9a-f30fe5ea5e6e
add ChangeLog file (created from looking at the svn log messages). git-svn-id: https://svn.verisignlabs.com/jdnssec/tools/trunk@77 4cbd57fe-54e5-0310-bd9a-f30fe5ea5e6e