RFR: 8258445: Move make/templates to make/data

[Magnus Ihse Bursie]

The `templates` directory in `make` is an odd bird. It actually contains data files that the license checker needs, so it should move to `make/data`.

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Commit messages:
 - 8258445: Move make/templates to make/data

Changes: https://git.openjdk.java.net/jdk/pull/1790/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1790&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8258445
  Stats: 5 lines in 4 files changed: 0 ins; 0 del; 5 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1790.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1790/head:pull/1790

PR: https://git.openjdk.java.net/jdk/pull/1790