RFR: 8289925 Shared code shouldn't reference the platform specific method frame::interpreter_frame_last_sp() [v2]

[Richard Reingruber]

> This removes the reference to the platform specific method `frame::interpreter_frame_last_sp()` from the shared method `Continuation::continuation_bottom_sender()`.
> 
> The change simply removes the special case for interpreted frames as I cannot see a reason for the distinction between interpreted and compiled frames.
> 
> Testing: hotspot_loom and jdk_loom on x86_64 and aarch64.

Richard Reingruber 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 two additional commits since the last revision:

 - Merge branch 'master'
 - Remove platform dependent method interpreter_frame_last_sp() from shared code

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/9411/files
  - new: https://git.openjdk.org/jdk/pull/9411/files/54d7db65..c3ad382c

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=9411&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=9411&range=00-01

  Stats: 84184 lines in 1882 files changed: 43512 ins; 26168 del; 14504 mod
  Patch: https://git.openjdk.org/jdk/pull/9411.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9411/head:pull/9411

PR: https://git.openjdk.org/jdk/pull/9411