cms-sw/cmssw — pull request #3523 by VinInn (2014-04-26 11:59:52+00:00)
Title: make it thread local

A proper solution would require two/three days of solid work.
Given that a full reimplementation of TkMSParametrization is planned since ages, I estimate that this mitigation is enough.
If no reimplementation will be available in the timescale of Run2 TRK POG will consider a more sane solution