RFR: Merge jdk17

[Jesper Wilhelmsson]

Forwardport JDK 17 -> JDK 18

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Commit messages:
 - Merge
 - 8269929: (test) Add diagnostic info to ProceessBuilder/Basic.java for unexpected output
 - 8269185: Directories in /opt/runtimepackagetest and /path/to/jdk-17 are different
 - 8269879: [PPC64] C2: Math.rint intrinsic uses wrong rounding mode
 - 8266036: class file for sun.misc.Contended not found
 - 8269772: [macos-aarch64] test compilation failed with "SocketException: No buffer space available"
 - 8268859: jshell throws exception while parsing illegal "case true"
 - 8269802: javac fails to compile nested pattern matching switches
 - 8269830: SA's vm object vtable matching code sometimes matches on incorrect type
 - 8268778: CDS check_excluded_classes needs DumpTimeTable_lock

The webrevs contain the adjustments done while merging with regards to each parent branch:
 - master: https://webrevs.openjdk.java.net/?repo=jdk&pr=4713&range=00.0
 - jdk17: https://webrevs.openjdk.java.net/?repo=jdk&pr=4713&range=00.1

Changes: https://git.openjdk.java.net/jdk/pull/4713/files
  Stats: 1083 lines in 36 files changed: 629 ins; 278 del; 176 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4713.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4713/head:pull/4713

PR: https://git.openjdk.java.net/jdk/pull/4713