#280 Obsolete references to "@itcl" syntax

[Tim Tomkinson]

There are 2 obsolete references to the old "@itcl" variable syntax:

1. In the header of the Itcl_ScopeCmd() function in itclCmd.c:

 *  If the <variable> is an instance variable, this procedure returns
 *  a name of the form:
 *
 *    @itcl ::namesp::namesp::object variable

1. In the man page for the "scope" command:

   You should never use the @itcl syntax directly. For example, it is a bad idea to write code like this:

    set {@itcl ::fred x} 3
    puts "value = ${@itcl ::fred x}"