0024023: Revamp the OCCT Handle -- general

Missing headers added; includes of headers "Handle_...hxx" removed.

Misuses of macro Handle() and its use in typedefs corrected.

Alias classes Profile and Option are removed from IFSelect; ones defined in MoniTool are used directly.

Removed header files defining only Handle classes (except Image_PixMap_Handle.hxx)

Classes SelectMgr_BaseFrustum and now inherit Standard_Transient and can be manipulated by Handle (not NCollection_Handle)

Fixed reference-type local variable pointing to temporary object

Use of handle in conditional expressions and comparisons to NULL are replaced by call to method IsNull()

src/BOPAlgo/BOPAlgo_PaveFiller_6.cxx

@@ -1131,7 +1131,7 @@ void BOPAlgo_PaveFiller::UpdateFaceInfo
      const BOPDS_Curve& theNC,
      const Standard_Real theTolR3D,
      const BOPDS_IndexedMapOfPaveBlock& theMPBOnIn,
-     Handle(BOPDS_PaveBlock&) aPBOut)
+     Handle(BOPDS_PaveBlock)& aPBOut)
 {
   Standard_Boolean bRet;
   Standard_Real aT1, aT2, aTm, aTx;

src/BOPAlgo/BOPAlgo_PaveFiller_7.cxx

@@ -516,7 +516,7 @@ void BOPAlgo_PaveFiller::MakePCurves()
       }
       //
       Handle(BOPDS_CommonBlock) aCB=myDS->CommonBlock(aPB);
-      if (!aCB) {
+      if (aCB.IsNull()) {
         continue;
       }
       //