Base export target chache key on the exported target

The cache key for an export target should contain as target name
that of the export target (and its effective configuration) rather
than the exported target. As we computed the repository part of
the cache key for the target included in the key, this was still a
correct cache key except in the case an explicit file reference was
exported (as here, the information that the file was to be taken
rather than the target of the same name got lost). We still fix
this issue by making the implementation match our design (rather
than by including the file-reference bit in the cache key), as the
original design gives the cleaner protocol for target-level caching
as a service.

(cherry-picked from 180d8d89ffa92f8c3e8b8bcb912ec1a4990569c9)

0 files changed, 0 insertions, 0 deletions