very small packages - merge into general/miscelleneous or move into core

[Carnë Draug]

Hi

packages such as strings or struct have been reducing in size, their
functions either moved into Octave core or deprecated in favour of
others that are Matlab compatible. At the moment, they have only a
handful of functions and I don't see a need to have them as separate
packages.

For each of them I can see 3 things:

1) they're useful and are moved into Octave core (either as a separate
function or extension to existing ones)
2) they're useful but they are not wanted in core so they are merged
into the general or miscellaneous package
3) they're not that useful or are so simple that it's not worth having
them in a package

What do you guys of each of them. See:

http://octave.sourceforge.net/strings/overview.html
http://octave.sourceforge.net/struct/overview.html

I'm sure there are other functions who made sense when they were
implemented some years ago but could now be replaced by other stuff in
core. Does anyone have suggestions?

Carnë