Integrated: vcs: handle "No newline at end of file" in UnifiedDiffParser

[Erik Helin]

Hi all,

please review this patch that handles a `\ No newline at end of file` line in a unified diff.

Testing:
- [x] Added a new unit test

Thanks,
Erik

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Commit messages:
 - vcs: handle "No newline at end of file" in UnifiedDiffParser

Changes: https://git.openjdk.java.net/skara/pull/915/files
 Webrev: https://webrevs.openjdk.java.net/?repo=skara&pr=915&range=00
  Stats: 47 lines in 2 files changed: 40 ins; 1 del; 6 mod
  Patch: https://git.openjdk.java.net/skara/pull/915.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/915/head:pull/915

PR: https://git.openjdk.java.net/skara/pull/915