[Rev 01] RFR: hg: add support for skara and focus on webrev, defpath and jcheck

[Erik Helin]

> Hi all,
> 
> please review this patch that adds proper support for Mercurial for the
> following Skara CLI tools:
> 
> - webrev
> - defpath
> - jcheck
> - skara
> 
> Since the above tools except Skara are already backwards compatible with their Mercurial
> counterparts in OpenJDK, I only had to do some work on `GitSkara.java`. Since
> the `skara` tool now is supported a user can now run e.g. `hg skara update`.
> 
> Testing:
> - Manual testing on Linux x64 with hg 4.9.2 and hg 5.3 and Python 2.7.16
> 
> Thanks,
> Erik

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

  Use OpenJDK

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

Changes:
  - all: https://git.openjdk.java.net/skara/pull/535/files
  - new: https://git.openjdk.java.net/skara/pull/535/files/745dc744..1d724fc6

Webrevs:
 - full: https://webrevs.openjdk.java.net/skara/535/webrev.01
 - incr: https://webrevs.openjdk.java.net/skara/535/webrev.00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/skara/pull/535.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/535/head:pull/535

PR: https://git.openjdk.java.net/skara/pull/535