RFR: 8258447: Move make/hotspot/hotspot.script to make/scripts

[Magnus Ihse Bursie]

The hotspot launcher script is misplaced among the hotspot make files. It should move to make/scripts (and get a proper extension).

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Commit messages:
 - 8258447: Move make/hotspot/hotspot.script to make/scripts

Changes: https://git.openjdk.java.net/jdk/pull/1791/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1791&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8258447
  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1791.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1791/head:pull/1791

PR: https://git.openjdk.java.net/jdk/pull/1791