RFR: Read jcheck configuration directly from the seed repository

[Robin Westberg]

There's no need to materialize a seeded hosted repository just to read a single file.

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Commit messages:
 - Read jcheck configuration directly from the seed repository

Changes: https://git.openjdk.java.net/skara/pull/875/files
 Webrev: https://webrevs.openjdk.java.net/?repo=skara&pr=875&range=00
  Stats: 21 lines in 2 files changed: 13 ins; 3 del; 5 mod
  Patch: https://git.openjdk.java.net/skara/pull/875.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/875/head:pull/875

PR: https://git.openjdk.java.net/skara/pull/875