Add position options for legend?

[John W. Eaton]

On  9-Aug-2007, Peter Gustafson wrote:

| legend no longer has as many options as the octave-forge version did. 
| I'm not sure if that was on purpose or not, but I often use the below
| option.  This patch restores the prior function if there is interest. 
| At some point we might want to make it more matlab compatible but that
| would be a low priority for me.
| 
| Pete
| 
| 2007-07-26  Peter Gustafson  <address@hidden>
| 
|         * scripts/plot/__go_draw_axes__.m: Add position options for
| legend. Note -1 is conforms to older octave-forge version.
|         * scripts/plot/legend.m: Change info to reflect additional
| positions.

Matlab compatibility for this function is more important to me than
backward compatibility with previous versions of Octave or Octave
Forge versions of legend, so I would prefer to have a version that
accepts property lists and handles the "location" property in a
(currently) compatible way (i.e., "north", "south", ...).

jwe