RFR: 8330261: Clean up linking steps [v5]

Tue Apr 16 09:49:11 UTC 2024

> Instead of executing code directly in Link.gmk, we set variables that are then evaluated to get the code we want. This is non-transparent and makes it unnecessarily hard to work with the linking code base. 
> 
> This PR also contains some additional code cleanup/fixes.

Magnus Ihse Bursie has updated the pull request incrementally with two additional commits since the last revision:

 - ... and fix indentation
 - Remote ExecuteWithLog for the MT call

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/18783/files
  - new: https://git.openjdk.org/jdk/pull/18783/files/df3f64a2..34422bc9

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18783&range=04
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18783&range=03-04

  Stats: 4 lines in 1 file changed: 0 ins; 1 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/18783.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18783/head:pull/18783

PR: https://git.openjdk.org/jdk/pull/18783