RFR: 8277216: Examine InstanceKlass::_misc_flags for concurrency issues [v3]

[Coleen Phillimore]

> Recent bug in misc_flags showed that they are not set concurrently and could cause bugs.  Most of the misc_flags are set at classfile parsing time or at a safepoint and never reset.  This change adds an assert that the flag is set once.  See CR for more details.
> Tested with tier1-3.

Coleen Phillimore has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains five additional commits since the last revision:

 - Merge branch 'master' into misc
 - Fix typo.
 - Move has_resolved_methods to access flags so can be set and tested concurretly.
 - Move has_resolved_methods to access flags so can be set and tested concurretly.
 - 8277216: Examine InstanceKlass::_misc_flags for concurrency issues

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/6851/files
  - new: https://git.openjdk.java.net/jdk/pull/6851/files/8f2406b7..02e8da79

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=6851&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=6851&range=01-02

  Stats: 4124 lines in 99 files changed: 1969 ins; 1951 del; 204 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6851.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6851/head:pull/6851

PR: https://git.openjdk.java.net/jdk/pull/6851