Bump component versions

The following changes were made:
	imagej1.version = 1.49i (latest net.imagej:ij)
	ij1-patcher.version = 0.10.2 (latest net.imagej:ij1-patcher)
	imagej-launcher.version = 3.1.7 (latest net.imagej:imagej-launcher)
	imagej-legacy.version = 0.8.5 (latest net.imagej:imagej-legacy)

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Bump the pom-scifio version

The SciJava helper script does not handle import scope dependencies yet.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Bump imagej and imagej-ui-swing preemptively

The big new thing is of course the script interpreter. So let's have
a new ImageJ 2 release candidate to upload to the update site.

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