Add dummy AWT classes

... as required by Bio-Formats' bfconvert. These classes are not used, just loaded, therefore their absence would crash bfconvert.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Merge branch 'data-output-stream' into bio-formats
Merge branch 'dates' into bio-formats
Merge branch 'random-access-file' into bio-formats
Merge branch 'simple-regex' into bio-formats