RFR: 8315652: RISC-V: Features string uses wrong separator for jtreg [v2]

[Robbin Ehn]

> Hi, please consider.
> 
> As described in jbs, this handles both cases with a rough solution by having two strings.
> Meaning we get e.g. 'v' as a separate feature from CPUInfo, but we still get the pretty string in e.g. hs_err.
> 
> Tested tier1 on qemu rv.

Robbin Ehn has updated the pull request incrementally with one additional commit since the last revision:

  Wrong buffer copied

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/15579/files
  - new: https://git.openjdk.org/jdk/pull/15579/files/8ed5e590..1ca70f8f

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=15579&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=15579&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/15579.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15579/head:pull/15579

PR: https://git.openjdk.org/jdk/pull/15579