RFR: 319: git-info uses wrong JBS project

[Erik Helin]

Hi all,

please review this patch that ensures that `git pr` reads the .jcheck/conf from
the given revision, *not* from `master`.

Testing:
- Manual testing of `git-info` on Linux x64

Thanks,
Erik

-------------

Commit messages:
 - skara-319

Changes: https://git.openjdk.java.net/skara/pull/516/files
 Webrev: https://webrevs.openjdk.java.net/skara/516/webrev.00
  Issue: https://bugs.openjdk.java.net/browse/SKARA-319
  Stats: 4 lines in 1 file changed: 0 ins; 0 del; 4 mod
  Patch: https://git.openjdk.java.net/skara/pull/516.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/516/head:pull/516

PR: https://git.openjdk.java.net/skara/pull/516