RFR: 8330077: Allow max number of events to be buffered to be configurable to avoid OVERFLOW_EVENT [v14]

[Fabian Meumertzheim]

> The limit on the number of events buffered for a single `j.n.f.WatchKey` is now configurable via the `jdk.nio.file.WatchService.maxEventsPerPoll`.

Fabian Meumertzheim has updated the pull request incrementally with two additional commits since the last revision:

 - Reflow
 - Use `@systemProperty`

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/18739/files
  - new: https://git.openjdk.org/jdk/pull/18739/files/dc920736..0703b3f4

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18739&range=13
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18739&range=12-13

  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/18739.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18739/head:pull/18739

PR: https://git.openjdk.org/jdk/pull/18739