[jdk17u-dev] RFR: 8300490: Spaces in name of MacOS Code Signing Identity are not correctly handled after JDK-8293550

[Christoph Langer]

Backport of JDK-8300490. I had to resolve copyright years. Will mark clean.

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

Commit messages:
 - Backport 62a2f2327a7879724cab6d2d1d7d9ddfeb37d189

Changes: https://git.openjdk.org/jdk17u-dev/pull/1084/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1084&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8300490
  Stats: 3 lines in 1 file changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1084.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/1084/head:pull/1084

PR: https://git.openjdk.org/jdk17u-dev/pull/1084