[Futurev4] fix failing tests

• Test 1: GaussSys.gausssys Here, I had to change the test so that it accepts the minimum working configuration coming from Gaussino.
• Test 2: LoKiGen.jira_461 ROOTIO from HepMC3 caused namespace collision with HepMC. It'll be now commented out in Gaussino as there is no need for it yet.
• Test 3: LoKiGen.lokigen0 Same problem as above + it looks like LoKi has some problems with dereferencing HepMC.GenParticle(). For example, this GP(HepMC.GenParticle()) gives

static double LoKi::Dicts::FunCalls<HepMC3::GenParticle>::__call__(LoKi::Functor<shared_ptr<const HepMC3::GenParticle>,double>& fun, const shared_ptr<const HepMC3::GenParticle>& o) =>
    could not convert argument 2

• Test 4: GaussTracker.shortened_sensdet_name This test, in its current shape, won't work because the expected debug debug() << "Sens det shortened name " << name() << " -> " << detname << endmsg; has been moved to the construct() in GiGaMTG4SensDetFactory. I wonder, in fact, whether this test is going to be useful... update: This is a very specific configuration in order to trigger a debug message with a shortened name of the sensitive detector. In order to do so, in Gauss-on-Gaussino it will only be triggered by running construct() on the GiGaSensDetTracker.

needs Gaussino/Gaussino!18 (merged) @gcorti @dmuller

Gen/LbEvtGen/CMakeLists.txt

@@ -40,8 +40,8 @@ string(REPLACE "/include" "" TAUOLAPP_ROOT_DIR ${TAUOLA++_INCLUDE_DIR})
 # In particular, in Photos++ v3.56 the components differ from those in v3.61
 # (which is the version assumed by default in the HepForge EvtGen cmake modules)
 set(EVTGEN_PYTHIA8_FIND_COMPONENTS pythia8 CACHE STRING "Required components of Pythia8")
-set(EVTGEN_PHOTOS++_FIND_COMPONENTS CxxInterface Fortran CACHE STRING "Required components of Photos++")
-set(EVTGEN_TAUOLA++_FIND_COMPONENTS CxxInterface Fortran CACHE STRING "Required components of Tauola++")
+set(EVTGEN_PHOTOSPP_FIND_COMPONENTS CxxInterface Fortran CACHE STRING "Required components of Photos++")
+set(EVTGEN_TAUOLAPP_FIND_COMPONENTS CxxInterface Fortran CACHE STRING "Required components of Tauola++")
 
 # Pass on the Gaudi C++ Standard to the EvtGen build
 string(REPLACE "c++" "" EVTGEN_CXX_STANDARD ${GAUDI_CXX_STANDARD})
@@ -52,11 +52,11 @@ ExternalProject_Add(EvtGenHepForge
   CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX}
 	     -DHEPMC2_ROOT_DIR=${HEPMC2_ROOT_DIR}
 	     -DPYTHIA8_ROOT_DIR=${PYTHIA8_ROOT_DIR}
-	     -DPythia8_FIND_COMPONENTS=${EVTGEN_PYTHIA8_FIND_COMPONENTS}
-	     -DPHOTOS++_ROOT_DIR=${PHOTOS++_ROOT_DIR}
-	     -DPHOTOS++_FIND_COMPONENTS=${EVTGEN_PHOTOS++_FIND_COMPONENTS}
-	     -DTAUOLA++_ROOT_DIR=${TAUOLA++_ROOT_DIR}
-	     -DTauola++_FIND_COMPONENTS=${EVTGEN_TAUOLA++_FIND_COMPONENTS}
+	     -DPYTHIA8_FIND_COMPONENTS=${EVTGEN_PYTHIA8_FIND_COMPONENTS}
+	     -DPHOTOSPP_ROOT_DIR=${PHOTOSPP_ROOT_DIR}
+	     -DPHOTOSPP_FIND_COMPONENTS=${EVTGEN_PHOTOSPP_FIND_COMPONENTS}
+	     -DTAUOLAPP_ROOT_DIR=${TAUOLAPP_ROOT_DIR}
+	     -DTAUOLAPP_FIND_COMPONENTS=${EVTGEN_TATUOLAPP_FIND_COMPONENTS}
 	     -DEVTGEN_PYTHIA=ON
 	     -DEVTGEN_PHOTOS=ON
 	     -DEVTGEN_TAUOLA=ON