RFR: 8067127: Tags cleanup

[Brian Burkhalter]

Please review this change to update some javadoc tags in the java.io package. The changes are to replace some
occurrences of <code>some_code</code> with {@code some_code}. Not all such constructs were replaced as being
infeasible, e.g., tag contains an entity such as <code>*/</code> (DataOutput, Serial), or multiple {@code} tags
would be needed or the result would be ugly (File). It is unclear whether some of the changes which remove the
non-breaking space entity ( ) are desirable.

Thanks,

Brian

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Commit messages:
 - 8067127: Tags cleanup

Changes: https://git.openjdk.java.net/jdk/pull/513/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=513&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8067127
  Stats: 35 lines in 13 files changed: 0 ins; 0 del; 35 mod
  Patch: https://git.openjdk.java.net/jdk/pull/513.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/513/head:pull/513

PR: https://git.openjdk.java.net/jdk/pull/513