MINOR: JavaDoc for VectorClock, DatabaseReconciliator, DownOperation
MINOR: Hopefully fix UTF-8 issues by settings file.encoding=UTF-8 in syncany shell/batch script
MINOR: add a simple way to iterate through version numbers in reverse order.
MINOR: modify the log standard output.

The new output use one line per file in the db and, in addition, one line
per version in the db, listed in reverse chronological order.
MINOR: add another ouput format for the log with an associated option.
Merge branch 'log-cmd'