deleting detector replaced by Factory::free
Method del() added for removing of detector
Switch for assert() of clash of detectors removed. assert now without condition
Method del(StiDetector*) for removing not needed detector is added
Delete (del()) of replaced detectors added
Path of replaced dedtector used in new one,
but name is different
Comment++
Test angle for new hit 33=>55 HFT alignement case
bug #2903  fixed. x0,x0p,x0Gas initialised now tp 1e11 instead of -1
Many asserts adde temporary. Some of them time consuming
In method setLayerRadius, tolerance  added, to avoid two objeck with slightly different
layer radius to be in dofferent layers
Implementation of setLayerRadius() moved to .cxx
Function recov() rewritten and simplified.
Additional temporary asserts added
Bug #2903 fix. x0,x0o,x0Gas init to 1e11, not -1
Temporary asserts added
Printing of size of TGeo and Sti volumes temporary added
Fix typo, StiSsdDetectorGroup ==> StiSsdDetectorGroup
Moved MyClear() to beginning of Make() to allow for access of StiTracks by other makers
Added new data members:

- to keep track of track energy losses in the node. Returned value is in GeV
- to keep track of the relative radiation length in the node
- to keep track of the track length in the node
Fix typo, StiSsdDetectorGroup ==> StiSsdDetectorGroup
Merge commit '96551740' into ss
Merge branch 'cvs' into ss
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