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VPTrackMonitor: Use Gaudi HistogramArray

Christopher Rob Jones requested to merge VPTrackMonitor-Use-HistogramArray into master

Current implement has issues in debug builds with warnings like

/usera/jonesc/LHCb/stack/Master/Rec/Tr/TrackMonitors/src/VPTrackMonitor.cpp: In function 'static std::array<Gaudi::Accumulators::HistogramWrapperInternal<Gaudi::Accumulators::HistogramingCounterBase<2, Gaudi::Accumulators::atomicity::full, double, (& Gaudi::Accumulators::naming::profilehistogramString), Gaudi::Accumulators::ProfileHistogramingAccumulator, std::tuple<Gaudi::Accumulators::Axis<double>, Gaudi::Accumulators::Axis<double> > >, std::integer_sequence<unsigned int, 0, 1> >, sizeof... (IDXs)> LHCb::Tr::Monitor::VPTrackMonitor<outmode>::optionalHistos::profhisto2DArrayBuilder(const LHCb::Tr::Monitor::VPTrackMonitor<outmode>*, const std::string&, const std::string&, const std::string&, std::tuple<unsigned int, double, double>, std::tuple<unsigned int, double, double>, std::index_sequence<__var_indices ...>) [with long unsigned int ...IDXs = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207}; LHCb::Tr::Monitor::OutputMode outmode = LHCb::Tr::Monitor::OutputMode::Tuples]':
/usera/jonesc/LHCb/stack/Master/Rec/Tr/TrackMonitors/src/VPTrackMonitor.cpp:342:7: note: variable tracking size limit exceeded with '-fvar-tracking-assignments', retrying without
  342 |       profhisto2DArrayBuilder( const VPTrackMonitor* owner, std::string const& fwdbwd, const std::string& name,

This MR switches to Gaudi's own HistogramArray to avoid these problems.

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