RFR: 8288068: Javadoc contains spurious reference to CLinker

[Maurizio Cimadamore]

This simple patch fixes a bunch of references to "CLinker" and replaces them with "Linker", following the API name changes.

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Commit messages:
 - Initial push

Changes: https://git.openjdk.java.net/jdk/pull/9094/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=9094&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8288068
  Stats: 5 lines in 2 files changed: 0 ins; 0 del; 5 mod
  Patch: https://git.openjdk.java.net/jdk/pull/9094.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/9094/head:pull/9094

PR: https://git.openjdk.java.net/jdk/pull/9094