Merge branch 'master_streamers' into 'master'

...TrigHypothesis/TrigStreamerHypo/ATLAS_CHECK_THREAD_SAFETY

Trigger/TrigHypothesis/TrigStreamerHypo/CMakeLists.txt

Trigger/TrigHypothesis/TrigStreamerHypo/doc/packagedoc.h

...hesis/TrigStreamerHypo/python/TrigStreamerHypoConfigMT.py

...Hypothesis/TrigStreamerHypo/src/ITrigStreamerHypoToolMT.h

...Hypothesis/TrigStreamerHypo/src/TrigStreamerHypoAlgMT.cxx

...igHypothesis/TrigStreamerHypo/src/TrigStreamerHypoAlgMT.h

...ypothesis/TrigStreamerHypo/src/TrigStreamerHypoToolMT.cxx

...gHypothesis/TrigStreamerHypo/src/TrigStreamerHypoToolMT.h

...gStreamerHypo/src/components/TrigStreamerHypo_entries.cxx

.../TrigValidation/TrigUpgradeTest/share/full_menu_build.ref

Trigger/TrigValidation/TrigUpgradeTest/share/testHLT_MT.py

Trigger/TriggerCommon/TriggerJobOpts/python/TriggerFlags.py

...LTMenuConfig/CalibCosmicMon/GenerateStreamingChainDefs.py

...TMenuConfig/CalibCosmicMon/StreamingChainConfiguration.py

...TriggerMenuMT/python/HLTMenuConfig/Menu/GenerateMenuMT.py

...rCommon/TriggerMenuMT/python/HLTMenuConfig/Menu/LS2_v1.py

Trigger/TriggerCommon/TriggerMenuMT/scripts/testMenuMT.sh

Trigger/TriggerCommon/TriggerMenuMT/scripts/test_HLTmenu.sh