[OE-core] refs to "git.pokylinux.org" -> "git.yoctoproject.org"

[Robert P. J. Day]

  there is a small number of references in oe-core to
git.pokylinux.org, which i imagine would make sense to update to
git.yoctoproject.org, no? i'll let someone else handle that as i'm not
sure if there's any reason to keep the original references.

rday

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Robert P. J. Day                                 Ottawa, Ontario, CANADA
                        http://crashcourse.ca

Twitter:                                       http://twitter.com/rpjday
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