0023024: Update headers of OCCT files

Added appropriate copyright and license information in source files

src/OSD/OSD_Chronometer.cdl

@@ -1,16 +1,30 @@
---Copyright:      Matra Datavision 1992,1993
+-- Created on: 2018-03-15
+-- Created by: Stephan GARNAUD (ARM)
+-- Copyright (c) 1998-1999 Matra Datavision
+-- Copyright (c) 1999-2012 OPEN CASCADE SAS
+--
+-- The content of this file is subject to the Open CASCADE Technology Public
+-- License Version 6.5 (the "License"). You may not use the content of this file
+-- except in compliance with the License. Please obtain a copy of the License
+-- at http://www.opencascade.org and read it completely before using this file.
+--
+-- The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
+-- main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
+--
+-- The Original Code and all software distributed under the License is
+-- distributed on an "AS IS" basis, without warranty of any kind, and the
+-- Initial Developer hereby disclaims all such warranties, including without
+-- limitation, any warranties of merchantability, fitness for a particular
+-- purpose or non-infringement. Please see the License for the specific terms
+-- and conditions governing the rights and limitations under the License.
+
 
--- File:          OSD_Chronometer.cdl
--- Created:       Tue 18 1992
--- Author:        Stephan GARNAUD (ARM)
---                <sga@sparc4>
 -- Updated:       J.P. TIRAULT August 1993
 --                All methods are static methods.
 --                the "Show" method returns the consumed CPU time in a Real
 --                variable.
 --                J.P. TIRAULT October 15 1994
 --                We measure both user and system cpu time.
---                
 class Chronometer from OSD
 
  ---Purpose: This class measures CPU time (both user and system) consumed