0029011: Draw Harness - simplify diffimage command syntax

0029011: Draw Harness - simplify diffimage command syntax

Command diffimage now accepts the following syntax:
  diffimage imageFile1 imageFile2 [diffImageFile]
            [-toleranceOfColor {0..1}=0] [-blackWhite {on|off}=off] [-borderFilter {on|off}=off]
            [-display viewName prsName1 prsName2 prsNameDiff] [-exitOnClose]

Command vinit now accepts the following syntax:
  vinit [-name viewName] [-left leftPx] [-top topPx] [-width widthPx] [-height heightPx]
        [-exitOnClose] [-display displayName]

Compatibility with old syntax is also preserved.
diffimage now can display compared images in 3D viewer.
The new option -exitOnClose can be used to exit application when closing the 3D View.