<i18n dev> RFR: 8291916: Unexpected output on Arabic Windows command prompt

[Ichiroh Takiguchi]

To support Windows command prompt's codepage, following charsets should be moved from jdk.charsets module to java.base module.

- IBM860
- IBM861
- IBM863
- IBM864
- IBM865
- IBM869

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Commit messages:
 - 8291916: Unexpected output on Arabic Windows command prompt

Changes: https://git.openjdk.org/jdk/pull/9761/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=9761&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8291916
  Stats: 6 lines in 1 file changed: 6 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/9761.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9761/head:pull/9761

PR: https://git.openjdk.org/jdk/pull/9761