Fixes to ls-mat5.cc and ov-class.cc

[John W. Eaton]

On 12-May-2009, Robert T. Short wrote:

| John W. Eaton wrote:
| >
| > Could you also look at the code in src/ls-mat5.cc that loads objects
| > from MAT files and make similar changes there?  Also, since the
| > structure of the code that loads MAT files is different, you can
| > easily convert an object to a struct if there is a problem with the
| > exemplar or the call to the constructor fails.
| >
| >   
| 
| Attached is a changeset that does this.  Also a couple of minor changes 
| to ov-class.cc; a spelling error and methods(obj) should return a cell 
| array.

I checked in the changeset.  Thanks.

| But now I have a question about the whole load/save thing.
| 
| I have not fixed the return struct thing yet because I am a little 
| confused.  How are load_binary and the code in ls-mat5 related?  
| Specifically, I created .mat files from MATLAB and read them into 
| octave.  It seems that the code in load_binary is called, not the mat5 code.

If the MAT file format is detected, the function do_load (in
load-save.cc) calls read_mat5_binary_element (defined in ls-mat5.cc).

jwe