Writing periodic BSpline surfaces to IGES:
Replace segmentation of surface to setting new origin.
Fix face bounds if its length (in U or V) is more than period.
Segmentation of BSpline curve/surface:
Throw exception if segment length more than period.
Fix test case bugs moddata_1 bug14782:
bounds of segmentation must be the same as curve bounds, according to issue description.
Changes in classes Geom2d_BSplineCurve, Geom_BSplineCurve, Geom_BSplineSurface:
- Replace *Raise_if macros with unconditional exceptions where it does not affect on performance.
- Update comments in .hxx files in regard of raised exceptions.
