Add a comment to the head of every Java output file stating that this file was
produced by CS2J.
A command line argument (markDate) controls whether the translation date is
included in this initial comment.
markDate should be set false for Rustici (end similar) else it will
produce spurious source control diffs
- remove antcalls because I thought they were breaking cancel behaviour
- fix cancel (ugly, looks like depends are run before unless= is checked, so add unless=is.run.cancelled to all tagets that do work)
- remove echoTranslateCS2J, better to use -v option to cs2j
