RFR: 7903135: Correct license file [v5]

[Dmitry Bessonov]

> The JT Harness repository doesn't have a LICENSE file.
> It contains `legal/license.txt`.
> We need to place a proper LICENSE file to the repository root.

Dmitry Bessonov has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains seven additional commits since the last revision:

 - copyright year changed
 - Merge branch 'openjdk:master' into 7903135
 - ReleaseNotes-jtharness.html: updating link to the new proper GPL v2 LICENSE
 - build.xml: copying LICENSE file to the distro
 - copyright.txt: CRN year updated
 - stylesheet.css updated with correct CRN header
 - 7903135: Correct license file

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

Changes:
  - all: https://git.openjdk.java.net/jtharness/pull/26/files
  - new: https://git.openjdk.java.net/jtharness/pull/26/files/4ab6db73..1f8c46bf

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jtharness&pr=26&range=04
 - incr: https://webrevs.openjdk.java.net/?repo=jtharness&pr=26&range=03-04

  Stats: 338 lines in 8 files changed: 332 ins; 0 del; 6 mod
  Patch: https://git.openjdk.java.net/jtharness/pull/26.diff
  Fetch: git fetch https://git.openjdk.java.net/jtharness pull/26/head:pull/26

PR: https://git.openjdk.java.net/jtharness/pull/26