RFR: 8270438: "Cores to use" output in configure is misleading

Mon Aug 30 13:15:46 UTC 2021

Description from the bug:

When building the JDK and running `configure` the output includes (example): 

Build performance summary: 
 * Cores to use: 4 
 * Memory limit: 32768 MB 

The "Cores to use" value is misleading; it is not actually the number of cores specified using `--with-num-cores`, but instead the number of jobs, which (unless explicitly specified), is calculated based on the available memory and the number of cores.

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Commit messages:
 - 8270438: "Cores to use" output in configure is misleading

Changes: https://git.openjdk.java.net/jdk/pull/5301/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5301&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8270438
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5301.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5301/head:pull/5301

PR: https://git.openjdk.java.net/jdk/pull/5301