[Toybox] [PATCH] add pid namespaces flag to unshare

[hhm]

this patch adds the ability to work with PID namespaces with the
"unshare" utility.

Following, for reference...
http://man7.org/linux/man-pages/man1/unshare.1.html
http://man7.org/linux/man-pages/man2/clone.2.html
http://man7.org/linux/man-pages/man2/unshare.2.html

P.S.
Another useful tool is "nsenter(1)":
http://man7.org/linux/man-pages/man1/nsenter.1.html
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