[MCHANGES-282] New parameter releaseDateLocale in changes-check goal
Submitted by: Petr Prochazka
Reviewed by: Dennis Lundberg

The patch was modified. Most notably, there is no default value for the new parameter. The method that checks the date uses the system default locale instead of a hard coded (parameter) default value. This better mimics the old behavior.

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1585646 13f79535-47bb-0310-9956-ffa450edef68
[MCHECKSTYLE-225] headerLocation no longer sets checkstyle.header.file

- Add an IT that fails (it works with 2.11)

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1585675 13f79535-47bb-0310-9956-ffa450edef68