Fixed #23071 -- Use last migration's name in dependency to other app

Thanks Keryn Knight for the report.

Thanks mitar for the suggestion.

Thanks thegeekofalltrades at gmail.com for the report.

Thanks Kyle Owens for the report.

Thanks raymond at adaptiv.nl for the report.

Thanks kunitoki for the report and initial patches.

See also:
https://www.gaia-gis.it/fossil/libspatialite/wiki?name=switching-to-4.0

The lack of this file breaks the test suite.

Changed the autodetector to lookup the name of the other app's last
migration in the graph and use that as dependency instead of using
__latest__.

Note that GDAL 1.11 is not yet officially supported, until someone
has tested it and can confirm it has no issues with Django.