ImgSaver: work around a Bio-Formats method going AWOL

This developer's guess is that this pull request wanted to cook more:

	https://github.com/openmicroscopy/bioformats/pull/505/

The long-term plan for imglib2-io is to go away in favor of scifio anyway,
though, so let's just add a work-around for the time being.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Remove tag-release.sh in favor of scijava-common's release-version.sh

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