[Numpy-discussion] Fixes to numexpr string support

[Ivan V. i B. <iv...@ca...>]

Hi all, these are just a couple of small fixes to the string support in
Numexpr, and a test case for the string copy operation.

For the base patches:

1.http://www.mail-archive.com/num...@li.../msg01551.html
2.http://www.mail-archive.com/num...@li.../msg02261.html

Cheers,

::

	Ivan Vilata i Balaguer   >qo<   http://www.carabos.com/
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