[Rev 01] RFR: 169: If there are no changes after squashing, jcheck should fail

[Robin Westberg]

The pull request has been updated with additional changes.

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Added commits:
 - a89389cc: Find a new way to trigger a jcheck exception

Changes:
  - all: https://git.openjdk.java.net/skara/pull/263/files
  - new: https://git.openjdk.java.net/skara/pull/263/files/afb5d7b6..a89389cc

Webrevs:
 - full: https://webrevs.openjdk.java.net/skara/263/webrev.01
 - incr: https://webrevs.openjdk.java.net/skara/263/webrev.00-01

  Issue: https://bugs.openjdk.java.net/browse/SKARA-169
  Stats: 14 lines in 1 file changed: 8 ins; 0 del; 6 mod
  Patch: https://git.openjdk.java.net/skara/pull/263.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/263/head:pull/263

PR: https://git.openjdk.java.net/skara/pull/263