[TreeProcMT] Explicitly call EnableThreadSafety from ctors
[TreeProcMT] Explicitly call EnableThreadSafety from ctors

...instead of relying on TThreadExecutor's ctor to do it for us.

karies/root,karies/root,olifre/root,karies/root,karies/root,olifre/root,karies/root,karies/root,olifre/root,root-mirror/root,root-mirror/root,olifre/root,root-mirror/root,root-mirror/root,karies/root,olifre/root,karies/root,root-mirror/root,karies/root,root-mirror/root,olifre/root,root-mirror/root,karies/root,root-mirror/root,root-mirror/root,olifre/root,olifre/root,olifre/root,root-mirror/root,olifre/root,root-mirror/root,karies/root,olifre/root