Updated notes on the test migration

[Uche Ogbuji]

I updated the Wiki to address many questions from folks working on the
test migration. If you are helping, please review:

http://wiki.xml3k.org/Amara2/Developer_notes/Test_migration

Thanks.

--
Uche Ogbuji http://uche.ogbuji.net
Founding Partner, Zepheira http://zepheira.com
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