[434197] Correctly manage expressions ending with whitespace in Service
Interpreter

A trim() has been added. The EvaluationException message of
ServiceInterpreter and VariableInterpreter has also been clarified (just
a little).

Bug: 434197
Change-Id: I05a94af74cda0c1da52d3f790a915c5438cb3a83
Signed-off-by: Laurent Redor <laurent.redor@obeo.fr>
[build] Update luna TP to reference new versions of com.ibm.icu &
emf.compare

Signed-off-by: Alex Lagarde <alex.lagarde@obeo.fr>