RFR: 8349620: Add VMProps for static JDK

[Jiangli Zhou]

Please review this change that adds the `jdk.static` VMProps. It can be used to skip tests not for running on static JDK.

This also adds a new WhiteBox native method, `jdk.test.whitebox.WhiteBox.isStatic()`, which is used by VMProps to determine if it's static at runtime. 

`@requires !jdk.static` is added in `test/hotspot/jtreg/runtime/modules/ModulesSymLink.java` to skip running the test on static JDK. This test uses `bin/jlink`, which is not provided on static JDK. There are other tests that require tools in `bin/`. Those are not modified by the current PR to skip running on static JDK. Those can be done after the current change is fully discussed and reviewed/approved.

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Commit messages:
 - - Add 'jdk.static' in VMProps. It can be used to skip tests not for running on static JDK.

Changes: https://git.openjdk.org/jdk/pull/23528/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=23528&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8349620
  Stats: 19 lines in 6 files changed: 16 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/23528.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23528/head:pull/23528

PR: https://git.openjdk.org/jdk/pull/23528