A lot of our checks in the fetcher code assume that if the downloaded
file exists, the download finished successfully; this meant that if
BitBake was interrupted in the middle of a fetch then it would not
resume the fetch the next time, but instead attempt to use the
half-fetched file and usually fail as a result.
Since we're already writing a ".done" stamp file when a fetch completes,
just check for its existence and assume the download didn't complete
successfully if it isn't present.
(Bitbake rev: 721e986624529aedef96dd06c9fe6243f2897b10)
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>