RFR: 6928542: Chinese characters in RTF are not decoded [v3]

[Ichiroh Takiguchi]

> "character set of font" (font charset) table was created by "Rich Text Format Specification 1.9.1"
> https://interoperability.blob.core.windows.net/files/Archive_References/[MSFT-RTF].pdf
> It refers windgi.h
> https://learn.microsoft.com/en-us/windows/win32/api/wingdi/ns-wingdi-textmetrica
> 
> Test files and testcase are in bugid [JDK-6928542](https://bugs.openjdk.org/browse/JDK-6928542)
> 
> Additional change:
> Special character `\line` should `\n`
> 
> **Note:** Following GitHub actions were failed
> linux-x86 / test (jdk/tier1 part 1) was failed, it seems it was already reported
>> [JDK-8305875](https://bugs.openjdk.org/browse/JDK-8305875) Test TraceVirtualThreadLocals should be run with continuations only
> 
> windows-aarch64 / build (debug) was failed, but I have no idea...

Ichiroh Takiguchi has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains one commit:

  6928542: Chinese characters in RTF are not decoded

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

Changes: https://git.openjdk.org/jdk/pull/13553/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=13553&range=02
  Stats: 264 lines in 3 files changed: 261 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/13553.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13553/head:pull/13553

PR: https://git.openjdk.org/jdk/pull/13553