Wiki Edits: more information added on various pages

[Joshua Branson]

Hello!  Here is my weekly changes that I was able to add to the wiki.

1) I took the concrete example of the confused deputy problem from
wikipedia and added it to the capabilities page.
2) I added some more information on the libstore page.  I got the
information from the source code.
3) This is probably the most controversial change.  I mentioned that
Debian GNU/Hurd is probably not the most stable OS on the GNU OS page.
I then provided a link to GNU's free distro pages, and I also
recommended users to use GNU GuixSD.

Thanks!

0001-I-added-a-concrete-example-to-the-capability-page.patch
Description: example of capabilities page

0001-I-added-a-few-more-sentences-to-the-libstore-page.patch
Description: more detail on libstore

0001-I-added-a-few-paragraphs-to-the-GNU-System-page.patch
Description: a few paragraphs on the GNU System page

-- 
Joshua Branson
Sent from Emacs and Gnus