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/DDataStd/DDataStd_TreeCommands.cxx

@@ -376,7 +376,7 @@ static Standard_Integer DDataStd_ChildNodeIterate (Draw_Interpretor& di,
   if (n >= 4) {
     Handle(TDF_Data) DF;
     if (!DDF::GetDF(a[1],DF)) return 1;
-    const Standard_Boolean AllLevels(Draw::Atoi(a[3]));
+    const Standard_Boolean AllLevels = (Draw::Atoi(a[3]) != 0);
     Handle(TDataStd_TreeNode) TN, Value;
 
     Standard_GUID ID;
@@ -439,7 +439,7 @@ static Standard_Integer DDataStd_InitChildNodeIterator (Draw_Interpretor& di,
     }
 
     if (!DDF::Find(DF, a[2], ID, TN)) return 1; 
-    const Standard_Boolean AllLevels(Draw::Atoi(a[3]));
+    const Standard_Boolean AllLevels = (Draw::Atoi(a[3]) != 0);
     cni.Initialize(TN, AllLevels);
     return 0;
   }