RFR: 8325055: Rename Injector.h [v3]

[Kim Barrett]

> Please review this trivial change that renames the file
> test/hotspot/jtreg/vmTestbase/nsk/share/jvmti/Injector.h to Injector.hpp.
> 
> Testing: mach5 tier1

Kim Barrett 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 three additional commits since the last revision:

 - Merge branch 'master' into Injector
 - fix name in README
 - rename Injector.h

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/17656/files
  - new: https://git.openjdk.org/jdk/pull/17656/files/0ab5cf73..02077283

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=17656&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=17656&range=01-02

  Stats: 6112 lines in 157 files changed: 4498 ins; 767 del; 847 mod
  Patch: https://git.openjdk.org/jdk/pull/17656.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17656/head:pull/17656

PR: https://git.openjdk.org/jdk/pull/17656