RFR: 8005885: enhance PrintCodeCache to print more data

[Yi-Fan Tsai]

8005885: enhance PrintCodeCache to print more data

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Commit messages:
 - Simplify
 - Report code cache in tiers
 - temp
 - Merge branch 'master' of https://github.com/yftsai/jdk into cclogs
 - Improve CodeCache logs

Changes: https://git.openjdk.java.net/jdk/pull/7389/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=7389&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8005885
  Stats: 74 lines in 1 file changed: 46 ins; 1 del; 27 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7389.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7389/head:pull/7389

PR: https://git.openjdk.java.net/jdk/pull/7389