Who(s) output

[Oyvind Kristiansen]

I've rewritten the patch for updating who/whos.

What's new (compared with the existing output):
-ability to print information on memory used by variables
-ability to print descriptor of dimensions, instead of just rows and cols
 (as it is today)
-ability to format the output to a great degree

An internal variables now describes the output from whos:
-whos_line_format, tells Octave what ordering is to be used per line of
 information and what information is to be included. It is a format
 string.


-Oeyvind

patch
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ChangeLog
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