RFR: 8272347: ObjectMethods::bootstrap should specify NPE if any argument except lookup is null [v4]

[Vicente Romero]

> Please review this simple PR along with the associated CSR. The PR is basically adding a line the the specification of method `java.lang.runtime.ObjectMethods::bootstrap` stating under what conditions a NPE will be thrown.
> 
> TIA
> 
> link to the [CSR](https://bugs.openjdk.java.net/browse/JDK-8272852)

Vicente Romero 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 JDK-8272347
 - adding pattern matching
 - clarifying that the names parameter is ignored in some cases
 - addressing review comments
 - 8272347: ObjectMethods::bootstrap should specify NPE if any argument except lookup is null

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/5226/files
  - new: https://git.openjdk.java.net/jdk/pull/5226/files/102cd1aa..e0a7f5b5

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=5226&range=03
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=5226&range=02-03

  Stats: 6008 lines in 269 files changed: 4342 ins; 755 del; 911 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5226.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5226/head:pull/5226

PR: https://git.openjdk.java.net/jdk/pull/5226