Python less 3.x uses GdkPixbuf.new_subpixbuf instead dkPixbuf.subpixbuf issue 6487 

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps40@21476 4ae1f11a-8b86-4847-b8af-ab372f36d1fd