git: openjdk/skara: Proper parsing of git diff --raw lines

[duke]

Changeset: f9979b07
Author:    Erik Helin <ehelin at openjdk.org>
Date:      2019-08-16 11:49:34 +0000
URL:       https://git.openjdk.java.net/skara/commit/f9979b07

Proper parsing of git diff --raw lines

Reviewed-by: rwestberg

! vcs/src/main/java/org/openjdk/skara/vcs/tools/PatchHeader.java
! vcs/src/main/resources/ext.py
! vcs/src/test/java/org/openjdk/skara/vcs/RepositoryTests.java