METReconstruction: enable thread-checker and fixes
The code is free of warnings except for the (optional) use of
TStopwatch
in METRecoTool
and METAssociationTool
. Hence these
classes are marked as ATLAS_NOT_THREAD_SAFE
. One should decide either
to remove this feature or re-implement it in a thread-safe manner.
Also enable thread-checker for METInterface
and METRecoInterface
.