[Bug-apl] user defined commands etc.

[Juergen Sauermann]

Hi,

regarding user defined commands I have changed the following in SVN 896:

1. )CLEAR also clears all user defined commands

2. )SAVE and )DUMP also save user defined commands so that they
   are available after )LOADing the workspace again.

3. If a workspace named SETUP (either .apl or .xml) exists in )LIB 0 then
   it is )LOADed automatically unless a CONTINUE workspace exists as
  well. The SETUP workspace can be used, for example, to set up user
   defined commands that shall exist in all workspaces.

4. For older workspaces, you can )COPY the SETUP workspace. However,
   this only works for )DUMPed workspaces (i.e. .apl files).

Elias, this change has moved the user defined commands from class Command
to class Workspace. If have updated the emacs code accordingly; please sync back.

/// Jürgen