RFR: 8353923: (fs) Further improve performance of URI -> Path conversion (win) [v2]

[Brian Burkhalter]

> If the path portion of a `URI` permits, then simply replace all `'\'` with `'/'` instead of completely parsing the path.

Brian Burkhalter has updated the pull request incrementally with one additional commit since the last revision:

  8353923: Add PathOfURI benchmark

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Changes:
  - all: https://git.openjdk.org/jdk/pull/24638/files
  - new: https://git.openjdk.org/jdk/pull/24638/files/3bd3e2a9..325abb62

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24638&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24638&range=00-01

  Stats: 47 lines in 2 files changed: 45 ins; 1 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/24638.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24638/head:pull/24638

PR: https://git.openjdk.org/jdk/pull/24638