[OHOS] Cherry-pick updates from master and upstream · Pull Request !140 · OpenHarmony/third_party_llvm-project

## PR Description
After merging https://gitee.com/openharmony/third_party_llvm-project/pulls/115 into master, this, again, syncs master branch into llvm-15.0.4-ohos.

Globally, these PRs are not ported because they need manual fixing:
- https://gitee.com/openharmony/third_party_llvm-project/pulls/111 (still not ported since https://gitee.com/openharmony/third_party_llvm-project/pulls/114, see [this message](https://gitee.com/openharmony/third_party_llvm-project/pulls/114#note_14950203_conversation_69970537);
- https://gitee.com/openharmony/third_party_llvm-project/pulls/103;
- https://gitee.com/openharmony/third_party_llvm-project/pulls/142;
- https://gitee.com/openharmony/third_party_llvm-project/pulls/158.

Also, https://gitee.com/openharmony/third_party_llvm-project/blob/master/README_zh.md and https://gitee.com/openharmony/third_party_llvm-project/blob/master/OAT.xml were not ported as well because they require changes.

Note that https://gitee.com/openharmony/third_party_llvm-project/pulls/100 from [the message](https://gitee.com/openharmony/third_party_llvm-project/pulls/114#note_14950203_conversation_69970537) is just a backport, so no action is needed to port it.

Also, upstream patches were cherry-picked for the following PRs:
- https://gitee.com/openharmony/third_party_llvm-project/pulls/122;
- https://gitee.com/openharmony/third_party_llvm-project/pulls/119, I believe, though this is not merged into master at the creation of this PR.

Also also, upstream diff https://reviews.llvm.org/D132642 ([lldb] Fix dotest argument order) was cherry-picked to help run lldb-api tests on the device properly.

类型	指派人员	状态
审查	hhj Pavel Kosov	进行中 (0/1人)
测试	openharmony_ci	进行中 (0/1人)

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