1) don't re-compute SHA-1 hashes before doing a diff, this could be a really    bad idea if files are not included in troves.  Defer to the SHA-1 stored    in troveInfo always. 2) don't re-compute the SHA-1 when getSigs() is called, same reason
1) don't re-compute SHA-1 hashes before doing a diff, this could be a really
   bad idea if files are not included in troves.  Defer to the SHA-1 stored
   in troveInfo always.
2) don't re-compute the SHA-1 when getSigs() is called, same reason

fedora-conary/conary,fedora-conary/conary,fedora-conary/conary,fedora-conary/conary,fedora-conary/conary