RFR: Make ext.py compatible with hg5 api

[Erik Duveblad via github.com]

On Thu, 22 Aug 2019 12:04:42 GMT, Jorn Vernee via github.com <duke at openjdk.java.net> wrote:

> The HG api changes in version 5 to drop the first 2 parameters to `mercurial.match.exact`, which breaks the extension script.
> 
> This PR detects whether we're running on hg 5, and if so, calls the function without the first 2 arguments instead.
> 
> ----------------
> 
> Commits:
>  - 741ee3e3:	Make ext.py compatible with hg5 api
> 
> Pull request:
> https://git.openjdk.java.net/skara/pull/67
> 
> Webrev:
> https://webrevs.openjdk.java.net/skara/67/webrev.00
> 
> Patch:
> https://git.openjdk.java.net/skara/pull/67.diff
> 
> Fetch command:
> git fetch https://git.openjdk.java.net/skara pull/67/head:pull/67

This PR has been reviewed by Erik Duveblad via github.com - changes are approved. Review comment:

Looks good, this is ready to go. I successfully run all tests on Linux x86_64 using `sh gradlew test` and Mercurial 4.9.0

PR: https://git.openjdk.java.net/skara/pull/67