BndLib/BndLib_AddSurface.cxx : algorithm of building bounding box for BSpline surfaces is improved
Test cases are modified according to current state of algorithm
Test case bug31995 added
New folder "hlr" with subfolders "exact_hlr" and "poly_hlr" has been created.
Draw command "vcomputehlr" has been corrected.
QA command "OCC27341" has been deleted as "vcomputehlr" does its job.