0027457: Modeling - Raise exception if scaled transformation is used for shape location

0027457: Modeling - Raise exception if scaled transformation is used for shape location

Implementation of raising exception while using scale and mirror transformation in shape location
TopLoc/TopLoc_Location.hxx
TopoDS/TopoDS_Shape.hxx

Implementation of new tools for removing forbidden locations from shapes:
BRepTools/BRepTools_PurgeLocations.cxx
BRepTools/BRepTools_PurgeLocations.hxx
BRepTools/BRepTools.cxx
BRepTools/BRepTools.hxx

Draw commands for transforming shapes are corrected, new draw commands: purgeloc, checkloc added
BRepTest/BRepTest_BasicCommands.cxx

Fixing unstable test bug xde bug24759
StepToGeom/StepToGeom.cxx

All other C++ commits are modification of algorithms used mainly in import/export operations in order to allows these operations if shape locations contains scale and mirror transformations.

New test for command purgeloc added
tests/bugs/moddata_3/bug27457
tests/bugs/moddata_3/bug27457_1
tests/bugs/moddata_3/bug27457_2

Some test corrected according to modifications.