Fix versions in pom.xml files

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Undo changes in SPIM Registration

This reverts it to the version in 'master'.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Undo changes in fiji-compat

This reverts it to the version in 'master'.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Undo changes in Descriptor_based_registration

This reverts it to the version in 'master'.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
download-launchers: unset CDPATH before doing anything

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
download-launchers: use correct ij-launcher version

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