0027772: Foundation Classes - define Standard_Boolean using C++ type "bool" instead of "unsigned int"

Code has been updated to remove no-op casts and implicit casts to Standard_Boolean.

Places of inproper use of Standard_Boolean instead of Standard_Integer
have been corrected:
- Bnd_Box, Bnd_Box2d
  Bit flags are now defined as private enum
- HLRAlgo_BiPoint, HLRAlgo_EdgesBlock, HLRBRep_EdgeData, HLRBRep_FaceData
  Bit flags are now defined as enum
- HLRAlgo_EdgeStatus, HLRBRep_BiPnt2D, HLRBRep_BiPoint
  Bit flags are now defined as bool fields
- HLRAlgo_PolyData
  Bit flags are now defined as Standard_Integer
- OSD_DirectoryIterator, OSD_FileIterator
  Boolean flag is now defined as Standard_Boolean
- ShapeAnalysis_Surface::SurfaceNewton()
  now returns Standard_Integer (values 0, 1 or 3)
- ChFi2d_FilletAlgo
  now uses TColStd_SequenceOfBoolean instead of TColStd_SequenceOfInteger
  for storing boolean flags

Method IFSelect_Dispatch::PacketsCount() has been dropped from interface.

ShapeFix_Solid::Status() has been fixed to decode requested status
instead of returning integer value.

TopOpeBRepBuild_Builder1 now defines map storing Standard_Boolean values
instead of Standard_Integer.

Persistence for Standard_Boolean type has been corrected
to keep backward compatibility:
- BinMDataStd, BinTools, FSD_BinaryFile

Broken Draw Harness commands vdisplaymode and verasemode have been removed.

BRepMesh_FastDiscretFace::initDataStructure() - workaround old gcc limitations

BRepMesh_IncrementalMesh::clear() - avoid ambiguity

src/DNaming/DNaming_BasicCommands.cxx

@@ -383,7 +383,7 @@ static Standard_Integer Collect (Draw_Interpretor& di,
     if (!DDF::GetDF(arg[1],DF)) return 1;
     if (!DDF::Find(DF,arg[2],TNaming_NamedShape::GetID(),A)) return 1;
     if (nb >= 4) {
-      OnlyModif = Draw::Atoi(arg[3]);
+      OnlyModif = (Draw::Atoi(arg[3]) != 0);
     }
     TNaming_Tool::Collect(A,MNS,OnlyModif);
     for (TNaming_MapIteratorOfMapOfNamedShape it(MNS); it.More(); it.Next()) {
@@ -484,7 +484,7 @@ static Standard_Integer CheckIter (Draw_Interpretor& di,
 	const TopoDS_Shape& aShape = DBRep::Get(arg[3]);
 	aNB.Generated(aShape);
 	TNaming_Iterator aNameIter(aLabel);
-	if(nb == 5) aNew = (Standard_Boolean) atoi(arg[4]);
+	if(nb == 5) aNew = (Draw::Atoi (arg[4]) != 0);
 	if(aNew) {
 	  TNaming_NewShapeIterator aNewShapeIter(aNameIter); 
 	  di << "DNaming_CheckIterator : New It is OK\n";