RFR: hg: implement hashes for blobs for ls-tree [v2]

[Erik Helin]

> Hi all,
> 
> please review this patch that properly implements `ls-tree` for Mercurial.
> 
> Testing:
> - [x] `make test` passes on Linux x64
> - [x] Updated unit test
> 
> Thanks,
> Erik

Erik Helin has updated the pull request incrementally with one additional commit since the last revision:

  Fix Python 3 compatability

-------------

Changes:
  - all: https://git.openjdk.java.net/skara/pull/725/files
  - new: https://git.openjdk.java.net/skara/pull/725/files/9f32a1a2..65b383f0

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=skara&pr=725&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=skara&pr=725&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/skara/pull/725.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/725/head:pull/725

PR: https://git.openjdk.java.net/skara/pull/725