RFR: 8297600: Check current thread in selected JRT_LEAF methods [v2]

[Aleksey Shipilev]

> With [JDK-8275286](https://bugs.openjdk.org/browse/JDK-8275286), we added the `Thread::current()` checks for most of the JRT entries. But `JRT_LEAF` is still not checked, because not every `JRT_LEAF` carries a `JavaThread` argument. Having assertions there helps for two reasons. First, these methods can be called from the stub/compiler code, which might be erroneous with thread handling (especially in x86_32 that does not have a dedicated thread register). Second, in the post-Loom world, current thread can change suddenly, as evidenced here: https://mail.openjdk.org/pipermail/hotspot-compiler-dev/2022-November/060779.html.
> 
> We can add the thread checks to relevant `JRT_LEAF` methods that accept `JavaThread*` too.
> 
> Additional testing:
>  - [x] Linux x86_64 fastdebug `tier1`
>  - [x] Linux x86_64 fastdebug `tier2`
>  - [x] Linux x86_32 fastdebug `tier1`
>  - [x] Linux x86_32 fastdebug `tier2`

Aleksey Shipilev has updated the pull request incrementally with one additional commit since the last revision:

  Revert some additions

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/11359/files
  - new: https://git.openjdk.org/jdk/pull/11359/files/cfd86289..cde0c198

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=11359&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=11359&range=00-01

  Stats: 13 lines in 3 files changed: 0 ins; 13 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/11359.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/11359/head:pull/11359

PR: https://git.openjdk.org/jdk/pull/11359