Array API changes

[John W. Eaton]

On 23-Feb-2010, Jaroslav Hajek wrote:

| I made the major changes to Array interfaces previously discussed on this 
list:
| http://old.nabble.com/proposal-for-changing-Array-interface-td27253527.htm
| 
| This is another significant step to a stable liboctave API:
| http://hg.savannah.gnu.org/hgweb/octave/rev/12884915a8e4

| The MArrayN and MArray2 classes are gone (ArrayN was removed
| previously). classes like Matrix or ColumnVector now derive directly
| from MArray.
| charMatrix and boolMatrix still derive from Array2, I'll fix that later.
| 
| Comments? Suggestions?

That's a large set of changes.  Thanks for doing this all of this work.

jwe