[Rev 01] RFR: Make it possible to cancel a Check

[Erik Helin]

The pull request has been updated with additional changes.

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Added commits:
 - 01b22f05: Improve grammar

Changes:
  - all: https://git.openjdk.java.net/skara/pull/180/files
  - new: https://git.openjdk.java.net/skara/pull/180/files/ed66f45c..01b22f05

Webrevs:
 - full: https://webrevs.openjdk.java.net/skara/180/webrev.01
 - incr: https://webrevs.openjdk.java.net/skara/180/webrev.00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/skara/pull/180.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/180/head:pull/180

PR: https://git.openjdk.java.net/skara/pull/180