StiDetectorBuilder: Added a method to save Sti geometry into a root file. The conversion to drawable objects is done by means of StiMaker/StiDetectorVolume class
StiXXXDetectorBuilder: Save Sti detector geometries as drawable objects in root files when 'debug2' option is specified in BFC chain
StiDetectorBuilder: Added method to remove a previously added Sti detector/volume
StiDetectorBuilder: Modified detector accessor to handle invalid detector requests in somewhat more graceful way
Uniform improvements in Sti objects output streamers
Remove unused variables
Added new data member to keep track of track energy losses in the node
Moved MyClear() to beginning of Make() to allow for access of StiTracks by other makers
Use SstDbMaker and SstDetectorBuilder when building SST in StiMaker
Merge branch 'ds-stimaker-hft-dev' into hft-dev
Merge branch 'ds-stimaker' into hft-dev
Merge branch 'ds-sti2root' into hft-dev