[Integrated] RFR: jcheck: allow pattern for merge commit messages

[Erik Helin]

Changeset: 0ef146d2
Author:    Erik Helin <ehelin at openjdk.org>
Date:      2020-03-05 07:35:07 +0000
URL:       https://git.openjdk.java.net/skara/commit/0ef146d2

jcheck: allow pattern for merge commit messages

Reviewed-by: rwestberg

! jcheck/src/main/java/org/openjdk/skara/jcheck/MergeMessageCheck.java
! jcheck/src/test/java/org/openjdk/skara/jcheck/MergeMessageCheckTests.java