Tests needed
-cmd/camput/
-verify that stat caching works. verify that -filenodes does create the permanode even if the file was already uploaded (and cached) in a previous run.
-- blobserver/{cond,replica,remote,shard} have no tests. should be easier now
that test.Fetcher is a full blobserver? see encrypt's nascent tests for
examples.
-- app engine integration tests (before we make a release, for sure,
but probably in presubmit)
-- cross-compiling to freebsd and windows etc still works.