0032402: Coding Rules - eliminate msvc warning C4668 (symbol is not defined as a preprocessor macro, replacing with '0' for directive)

Make preprocessor expressions consistent with respect to guard expressions.

Fixed usage of macros __QNX__, IRIX, OCCT_DEBUG, DO_INVERSE, DRAW, CHFI3D_DEB by value.
Removed obsolete hack for Sun Workshop 5.0 compiler.

src/GeomFill/GeomFill_CircularBlendFunc.cxx

@@ -28,7 +28,7 @@
 
 IMPLEMENT_STANDARD_RTTIEXT(GeomFill_CircularBlendFunc,Approx_SweepFunction)
 
-#if DRAW
+#ifdef DRAW
 #include <GeomAdaptor_Curve.hxx>
 #include <Geom_BSplineCurve.hxx>
 #include <DrawTrSurf.hxx>
@@ -281,7 +281,7 @@ Standard_Boolean GeomFill_CircularBlendFunc::D0(const Standard_Real Param,
 		      myRadius, Center,
 		      Poles,  Weigths);  
 
-#if DRAW
+#ifdef DRAW
 //  Handle(Geom_BSplineCurve) BS = 
 //    new Geom_BSplineCurve(Poles,Weights,Knots,Mults,Degree);
 //  sprintf(name,"SECT_%d",NbSections++);

src/GeomFill/GeomFill_CorrectedFrenet.cxx

@@ -389,7 +389,7 @@ Handle(GeomFill_TrihedronLaw) GeomFill_CorrectedFrenet::Copy() const
 //  Standard_Real StartAng = 0, AvStep, Step, t;
   Standard_Real StartAng = 0, AvStep, Step;
 
-#if DRAW
+#ifdef DRAW
   Standard_Real t;
 
   if (Affich) { // Display the curve C'^C''(t)
@@ -449,7 +449,7 @@ Handle(GeomFill_TrihedronLaw) GeomFill_CorrectedFrenet::Copy() const
     HArrNormal->ChangeValue(i) = SeqNormal(i); 
   };
   
-#if DRAW
+#ifdef DRAW
   if (Affich) {
     draw(EvolAroundT);
   }

src/GeomFill/GeomFill_EvolvedSection.cxx

@@ -61,7 +61,7 @@ GeomFill_EvolvedSection::GeomFill_EvolvedSection(const Handle(Geom_Curve)& C,
     }
   }
 
-#if DRAW
+#ifdef DRAW
   if (Affich) {
     char name[256];
     sprintf(name,"UnifSect_%d",++NumSec);

src/GeomFill/GeomFill_GuideTrihedronPlan.cxx

@@ -41,7 +41,7 @@ IMPLEMENT_STANDARD_RTTIEXT(GeomFill_GuideTrihedronPlan,GeomFill_TrihedronWithGui
 
 //#include <gp_Trsf2d.hxx>
 //#include <Bnd_Box2d.hxx>
-#if DRAW
+#ifdef DRAW
 #include <DrawTrSurf.hxx>
 #endif
 

src/GeomFill/GeomFill_LocationGuide.cxx

@@ -62,7 +62,7 @@
 
 IMPLEMENT_STANDARD_RTTIEXT(GeomFill_LocationGuide,GeomFill_LocationLaw)
 
-#if DRAW
+#ifdef DRAW
 static Standard_Integer Affich = 0;
 #include <Approx_Curve3d.hxx>
 #include <DrawTrSurf.hxx>
@@ -195,7 +195,7 @@ static void InGoodPeriod(const Standard_Real Prec,
   Trans.SetIdentity();
   WithTrans = Standard_False;
 
-#if DRAW
+#ifdef DRAW
   if (Affich) {
     Approx_Curve3d approx(myGuide, 1.e-4, 
 			  GeomAbs_C1, 

src/GeomFill/GeomFill_UniformSection.cxx

@@ -60,7 +60,7 @@ GeomFill_UniformSection::GeomFill_UniformSection(const Handle(Geom_Curve)& C,
    }
  }
 
-#if DRAW
+#ifdef DRAW
  if (Affich) {
    char name[256];
    sprintf(name,"UnifSect_%d",++NumSec);