MiniMaven: add forgotten 'else'

Without this 'else', the -D<key>=<value> options stop working all of a
sudden.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
MiniMaven: point out unknown options

Rather letting the user guess which of the command-line options could
not be understood, let's try to be nice and report the unknown option.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
MiniMaven: Bio-Formats and SCIFIO also have diverging jai_imageio

Let's handle them the same as the scifio artifacts: put Bio-Formats'
version into bio-formats/.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Merge branch 'mini-maven-fixes'

Assorted fixes for MiniMaven... one very crucial to make Fiji's Build.sh
work again: MiniMaven stopped handling -D correctly by mistake.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
ij-legacy: really enable blacklist for legacy commands even in debug
mode

As discussed earlier, we should not make debugging harder by letting the
debug mode behave differently from the non-debug mode.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Remove now-unused import

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
README.md: use new SCIFIO web site link