RFR: 8368938: ObjectWaiter::badObjectWaiterPtr could be static [v3]

[Francesco Andreuzzi]

> There's apparently no reason against having the symbol shared for all instances. This saves a byte from the memory footprint of `ObjectWaiter`.
> 
> Passes tier1 and tier2 (fastdebug).

Francesco Andreuzzi has updated the pull request incrementally with one additional commit since the last revision:

  include

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Changes:
  - all: https://git.openjdk.org/jdk/pull/27571/files
  - new: https://git.openjdk.org/jdk/pull/27571/files/7bb52de6..b9eb7c4c

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=27571&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=27571&range=01-02

  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/27571.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27571/head:pull/27571

PR: https://git.openjdk.org/jdk/pull/27571