RFR: 8271063: Print injected fields for InstanceKlass [v4]

[Coleen Phillimore]

> I added code to print the injected fields in InstanceKlass.  I also removed field offset sorting for do_nonstatic_fields because it's not necessary when used for purposes other than printing the fields.  I also added a gtest.
> Tested with tier1 all Oracle platforms, tier2-3 on linux-x64-debug, windows-x64-debug.

Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:

  Pair is much nicer.

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/4858/files
  - new: https://git.openjdk.java.net/jdk/pull/4858/files/7f8e7421..d7f648a0

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=4858&range=03
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=4858&range=02-03

  Stats: 14 lines in 1 file changed: 1 ins; 6 del; 7 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4858.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4858/head:pull/4858

PR: https://git.openjdk.java.net/jdk/pull/4858