Fix cached thumbs bug in SPW. See #10827
Fix NetworkChecker hangs on Linux (See #10824)

Rather than attempting to connect to o.org.uk from Linux clients,
we attempt to use the Java 1.6 classes via reflection. If the
client is running on Java 1.5, the network is always assumed to
be up. This may cause deadlocks on changing networks for
Linux+Java 1.5 users, which will have to be clearly outlined in
the release notes.

For the more far more common cases, however, this should be work.
Fix return value as seen by @jburel
Minor cleanup
Reduce verbose System.err as seen by @zeb
merge dev_4_4 -D org -I include -E exclude: PR 1127 (Fix cached thumbs bug in SPW. See #10827)
merge dev_4_4 -D org -I include -E exclude: PR 1128 (Fix NetworkChecker hangs on Linux (See #10824))
merge dev_4_4 -D org -I include -E exclude

Repository: openmicroscopy/openmicroscopy
Already up-to-date.
Merged PRs:
  # PR 1127 will-moore 'Fix cached thumbs bug in SPW. See #10827'
  # PR 1128 joshmoore 'Fix NetworkChecker hangs on Linux (See #10824)'

Repository: openmicroscopy/bioformats
Updating 19cb7c1..1d88f76
Conflicting PRs (not included):
  # PR 497 joshmoore 'Update version numbers to 4.4.8'

Repository: ome/scripts
Already up-to-date.

Repository: openmicroscopy/ome-documentation
Already up-to-date.

Generated by OMERO-merge-stable#232 (http://hudson.openmicroscopy.org.uk/job/OMERO-merge-stable/232/)