StiDetector::insideL(const double xl[3],int mode=0) mode is added
0=check only detector plane, 1=check all the boundaries

New method StiDetector::inside(..) added to check global pont
insideL mode added
inside() for the global space point
In refitL check for inside() lead to stop tracking
which is wrong. When track after refit missed volume,
it should not lead to stop tracking. Now this is fixed
Methods void AverageVolume(TGeoPhysicalNode *nodeP) and
         int AverageVolume(const char *fullPath)
are not virtual anymore. otherwice we got strange warning

int Diff(const char *path, const StiDetector *sVolu)Method added
It compares the TGeoVolume with StiDetector and returns 0
if everything is correct
Method Diff was added. It checks for random space points,
which belons TGeoVolume to be also inside of according StiDetector

Added test for reflection. Reflection is legal in Geant, but was not
accounted in Sti Averaging. Fixed
Debug--