1) Warning in Aspect.cxx couldn't be reproduced
2) Description of changes: added 'return' statements into ReadStep(...) functions of RWStepBasic_* classes.
3) BRepFill_OffsetWire.cxx - removed dead code;
4) IFSelect_WorkSession.cxx - swapped arguments;
5) TopOpeBRep_ShapeIntersector2d.cxx - removed 'brake' statement and changed loop to if-statement because of
void TopOpeBRep_ShapeIntersector2d::FindFFIntersection() function's call features.
6) V2d_RectangularGraphicGrid.cxx - left constants instead of functions beacuse of faster perfomance.
7) Commented unreachable code in files GeomFill_LocationGuide.cxx and TopOpeBRepTool_mkTondgE.cxx
Removed non-executed parts of code because
Standard_Boolean s1Point = Standard_False;
Standard_Boolean s2Point = Standard_False;
Standard_Boolean vClosed = Standard_False;
and never changed thus some parts of code are non-reachable.
Fixed mistake with 'else' without corresponding 'if'.
Commented unreachable code part.
