[SCM-897] French accent lost and replaced by weird characters in the changelog.xml

**[Jamel](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=aljane.jamel@gmail.com)** opened **[SCM-897](https://issues.apache.org/jira/browse/SCM-897?redirect=false)** and commented

Executing changelog goal of maven-changelog-plugin will result in xml file with weird characters replacing french accented characters.

You have to execute maven command on french system (in my case windows 7) to get the problem.

So far, I realized that a bug may be present in the scm git-exe plugin. it seems that an UTF-8 stream was read as ISO-8859-1 (Westen Europe) which lead to corrupted message.

I fixed the bug by passing System.getProperty("file.encoding") to --encoding param of "git whatchanged" command.

```
I added this line of code:
cl.createArg().setValue( "--encoding=" + System.getProperty("file.encoding"));
to org.apache.maven.scm.provider.git.gitexe.command.changelog.GitChangeLogCommand.createCommandLine()
```

the other way is to read the command output with the right encoding (I assume UTF-8).

---

**Affects:** 1.9.4

Start in org.apache.maven.scm.provider.git.gitexe.command.changelog.GitChangeLogCommand.createCommandLine() and reproduce the changelog goal on a French Windows system. Compare the encoding used by git whatchanged with the generated changelog.xml; done means French accented characters are preserved.

Written by the indexing model from the issue text.