add removed files to the changelog file list - this should allow better detection of removed file when walking in the history (like hg log) it doesn't help for the fast path of hg log where we only look at the filelog - users of the changelog file list shouldn't assume anymore that the file still exist (anyway it won't be found in the manifest like in 5ecf05541e11) - fix the tests (some hashes changed)

changeset:   0:acb14030fe0a
tag:         tip
user:        test
date:        Thu Jan  1 00:00:00 1970 +0000
summary:     test

b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3 644 a
a
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 1 changesets, 1 total revisions