target-test-runner: exclude package and log4j jars

Fixes #12114.
ImageJ: disable file grouping when not reading from the filesystem

In particular, this disables grouping when reading over HTTP, as that is
at best extremely slow.

Fixes #12158.
merge dev_5_0 -D org: PR 1018 (Flex: fix support for new file naming scheme)
merge dev_5_0 -D org: PR 1061 (Fix 5D Imspector support)
merge dev_5_0 -D org: PR 1077 (CellSens: fix off-by-ones in subresolution tile calculations)
merge dev_5_0 -D org: PR 1078 (Lots of Zeiss CZI fixes)
merge dev_5_0 -D org: PR 1079 (Gatan metadata fixes)
merge dev_5_0 -D org: PR 1080 (Exclude log4j and packages from target-test-runner)
merge dev_5_0 -D org: PR 1081 (Disable file grouping in ImageJ remote import plugin)
merge dev_5_0 -D org

Repository: openmicroscopy/bioformats
Already up-to-date.

Merged PRs:
  # PR 1018 melissalinkert 'Flex: fix support for new file naming scheme'
  # PR 1061 melissalinkert 'Fix 5D Imspector support'
  # PR 1077 melissalinkert 'CellSens: fix off-by-ones in subresolution tile calculations'
  # PR 1078 melissalinkert 'Lots of Zeiss CZI fixes'
  # PR 1079 melissalinkert 'Gatan metadata fixes'
  # PR 1080 melissalinkert 'Exclude log4j and packages from target-test-runner'
  # PR 1081 melissalinkert 'Disable file grouping in ImageJ remote import plugin'

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