Implement TmfRangeSynchSignal toString

I found it sad that TmfTimeSynchSignal had its toString but not
TmfRangeSynchSignal. This commit fixes the injustice.

Example of the result:

TmfRangeSynchSignal [source=\
org.eclipse.tracecompass.tmf.ui.views.histogram.HistogramView@3a7b058e, \
range=TmfTimeRange [fStartTime=03:02:54.940 166 462, \
fEndTime=03:02:54.977 325 374]]

Change-Id: Ic3accae7610e454736497251c170fbdecb9b83fb
Signed-off-by: Simon Marchi <simon.marchi@polymtl.ca>
Reviewed-on: https://git.eclipse.org/r/38067
Tested-by: Matthew Khouzam <matthew.khouzam@ericsson.com>
Reviewed-by: Hudson CI
Reviewed-by: Matthew Khouzam <matthew.khouzam@ericsson.com>
Reviewed-by: Alexandre Montplaisir <alexmonthy@voxpopuli.im>
Remove Uncategorized category using JBoss plugin and downgrade Tycho

The JBoss doesn't support Tycho 0.22.0 yet.

Change-Id: I44dd080d8c0e6a9bdf071a7aa3005c00be4fdfb1
Signed-off-by: Marc-Andre Laperle <marc-andre.laperle@ericsson.com>
Reviewed-on: https://git.eclipse.org/r/38070
Reviewed-by: Hudson CI
Reviewed-by: Bernd Hufmann <bernd.hufmann@ericsson.com>
Tested-by: Bernd Hufmann <bernd.hufmann@ericsson.com>
Bug 453706 - Uncategorize RCP and Testing features

The RCP features should not be installed by users but should be available
for RCP extending Trace Compass. The Testing feature is also not meant to
be installed by users manually.

Change-Id: I208d49d8a10d7898969cad73b621b268756b43f5
Signed-off-by: Marc-Andre Laperle <marc-andre.laperle@ericsson.com>
Reviewed-on: https://git.eclipse.org/r/37420
Reviewed-by: Bernd Hufmann <bernd.hufmann@ericsson.com>
Tested-by: Bernd Hufmann <bernd.hufmann@ericsson.com>
Reviewed-by: Hudson CI