MiniMaven: special-case Bio-Formats' scifio.jar

It needs to go into jars/bio-formats/ instead of jars/ to unconfuse
MiniMaven and the updater about SCIFIO's scifio.jar.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Merge branch 'minimaven-scifio'

This makes sure that MiniMaven copies Bio-Formats' scifio.jar into
jars/bio-formats/ instead of jars/.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>