[Chapel Merge] Document ChplConfig

Branch: refs/heads/main
Revision: da38dca
Author: bradcray
Link: https://github.com/chapel-lang/chapel/pull/19209
Log Message:

Merge pull request #19209 from bradcray/document-chplconfig

Document ChplConfig

[reviewed by @stonea]

I forgot to document ChplConfig in PR #19162, so this does so belatedly.
Specifically it:

  • adds ChplConfig to the standard module documentation (in the Utilities
    section, though I'm not positive that's the right choice)
  • deprecates the ChapelEnv module's documentation, referring to ChplConfig

While here, I also rephrased the ChplConfig description a bit.

Modified Files:
M doc/rst/meta/modules/standard.rst

M modules/Makefile
M modules/standard/ChapelEnv.chpl
M modules/standard/ChplConfig.chpl

Compare: https://github.com/chapel-lang/chapel/compare/a1c787a8f934...da38dca3f414