Misc cleanups.

- Make the static mapping const.
- Avoid copying map into a vector just to do an index lookup.
Added new bridge implementation for KeyList; Fix for non-const statics in ORA
testing
cherry pick  4d6cf81.
Marge changes from Jason.
Make translation optional in localToGlobal().
Sort pathmarks by tof, fix momentum local to global translation.
added isolation of muons from boosted tau decays
thread safety statics work
Various arrays of constants set and then assigned to other arrays of constants.
Make the static arrays const for thread safety.
Make the arrays these are copied to const.
Use simple proxy builder to avoid unnecessary TEveElement recreation.
Fix crash -- add check for trajectory map.
Example for visualisation of tracking particle with hits.
Comment track-propagator debug code.
Fix check for existence of event.
Added ModuleDescription access to stream modules

When ModuleDescription access was added to the other module types, the stream types were accidentally left out. This makes them uniform with all the other types.
Removed unneeded const_cast

Although the const_cast was not needed, it was showing up as a warning
by the thread-safety checker.
Changed statics to const statics

Previously, the function local statics were not declared const because
there was no way to easily set their values via the constructor. This
code was changed to use 'const function statics' where we use a helper
function to do the setup. This avoids thread-safety issues.
Migration to 'getByToken', part III.
Made Conversion thread-safe and smaller in memory and storage

Conversion previously stored two copies of tracks, one as Refs and
the other as RefToBase. Only the RefToBase were used internally and
externally. However, the RefToBase were filled from the Ref as needed.
Therefore I dropped the Refs and instead fill the RefToBase from the
Refs in the appropriate constructors. This means the vector of RefToBases
does not have to be mutable and therefore the object is thread-safe.

Added a ROOT I/O rule which allows reading back the old format which
has the Refs in the case where only the Refs were ever filled.
Trivial static fixes for thread safety