RFR: 2424: Enable copyright format check [v2]

[Zhao Song]

> Enable copyright check for skara

Zhao Song has updated the pull request incrementally with one additional commit since the last revision:

  update

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

Changes:
  - all: https://git.openjdk.org/skara/pull/1703/files
  - new: https://git.openjdk.org/skara/pull/1703/files/8e4cfd8e..629f2ef8

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=skara&pr=1703&range=01
 - incr: https://webrevs.openjdk.org/?repo=skara&pr=1703&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/skara/pull/1703.diff
  Fetch: git fetch https://git.openjdk.org/skara.git pull/1703/head:pull/1703

PR: https://git.openjdk.org/skara/pull/1703