more QR & Cholesky updating functions

[John W. Eaton]

On  3-Apr-2008, Jaroslav Hajek wrote:

| >  >
| >  If they aren't in the core of Matlab, should they go in the core of
| >  Octave? If they are in the core of Octave they should probably form part
| >  of the Chol and QR classes
| >
| 
| Yes, that's exactly the dilemma. They're missing from Matlab, but they
| are of the same nature like the rest, which is built into the QR and
| CHOL classes.

If these functions would be added to a class that is already in
Octave, then I think adding the new functions to Octave makes the most
sense, even if they are not part of the core set of Matlab functions.

jwe