[crac] RFR: Improved classpath matching [v2]

[Radim Vansa]

> This fixes an issue when the classpath entry is specified using a relative path, and another part of the application opens the file using absolute one (or vice versa) - e.g. using a custom classloader that does not use PersistentJarFile underneath.

Radim Vansa has updated the pull request incrementally with one additional commit since the last revision:

  In GHA the classpath has a different number of jars

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

Changes:
  - all: https://git.openjdk.org/crac/pull/118/files
  - new: https://git.openjdk.org/crac/pull/118/files/e15f9a97..15e8d617

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=crac&pr=118&range=01
 - incr: https://webrevs.openjdk.org/?repo=crac&pr=118&range=00-01

  Stats: 3 lines in 1 file changed: 0 ins; 1 del; 2 mod
  Patch: https://git.openjdk.org/crac/pull/118.diff
  Fetch: git fetch https://git.openjdk.org/crac.git pull/118/head:pull/118

PR: https://git.openjdk.org/crac/pull/118