This is an intermediate commit in order to back up changed files to
Github (i.e., the code compiles but does not complete).
Added methods to rotate horizontal channels when their use is
requested.  Also added DEBUG option to output png plots for the
various metrics (NLNMDeviation, Coherence, etc.).
Merge branch 'master' of github.com:joeledwards/asl-java-tools
Merged my changes of CoherencePBM with James' many new database classes.