0023547: Tests failures in debug mode

1. DRAW-commands for curve/surface continuity returning were changed.
2. Output of "distmini" DRAW-command is amended.
3. Function MinMax() was moved from Standard_Real to IntPatch_ImpImpIntersection_4.gxx.
4. Incorrect computing of nbcurveC1 in Geom2dConvert::C0BSplineToC1BSplineCurve(...) function was liquidated.

Test cases were changed.

src/HLRBRep/HLRBRep_Hider.cxx

@@ -594,7 +594,7 @@ void HLRBRep_Hider::Hide(const Standard_Integer FI,
     }
 
     catch(Standard_Failure) {
-#ifdef DEB
+#ifdef HLRBREP_DEB
       cout << "An exception was catched when hiding edge " << E;
       cout << " by the face " << FI << endl;
       Handle(Standard_Failure) fail = Standard_Failure::Caught();