RFR: 8355562: RISC-V: Cleanup names of vector-scalar instructions in riscv_v.ad [v2]

[Anjian-Wen]

> RISC-V: Cleanup names of vector-scalar instructions in riscv_v.ad

Anjian-Wen 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 'openjdk:master' into JDK-8355562
 - RISC-V: Cleanup names of vector-scalar instructions in riscv_v.ad

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/24865/files
  - new: https://git.openjdk.org/jdk/pull/24865/files/b0ed2ea8..7c77276e

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24865&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24865&range=00-01

  Stats: 776 lines in 32 files changed: 565 ins; 169 del; 42 mod
  Patch: https://git.openjdk.org/jdk/pull/24865.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24865/head:pull/24865

PR: https://git.openjdk.org/jdk/pull/24865