Support asm/cmm/js sources in executable components (#8639) (backport #9061)

[mergify]

This is an automatic backport of pull request #9061 done by Mergify.
Cherry-pick of 3350a6c has failed:

On branch mergify/bp/3.10/pr-9061
Your branch is up to date with 'origin/3.10'.

You are currently cherry-picking commit 3350a6c8a.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	new file:   cabal-testsuite/PackageTests/CmmSourcesExe/cabal.out
	new file:   cabal-testsuite/PackageTests/CmmSourcesExe/cabal.project
	new file:   cabal-testsuite/PackageTests/CmmSourcesExe/cabal.test.hs
	new file:   cabal-testsuite/PackageTests/CmmSourcesExe/cbits/HeapPrim.cmm
	new file:   cabal-testsuite/PackageTests/CmmSourcesExe/cmmexperiment.cabal
	new file:   cabal-testsuite/PackageTests/CmmSourcesExe/demo/Main.hs
	new file:   cabal-testsuite/PackageTests/CmmSourcesExe/setup.out
	new file:   cabal-testsuite/PackageTests/CmmSourcesExe/setup.test.hs
	new file:   cabal-testsuite/PackageTests/CmmSourcesExe/src/Demo.hs
	new file:   cabal-testsuite/PackageTests/JS/JsSourcesExe/cabal.project
	new file:   cabal-testsuite/PackageTests/JS/JsSourcesExe/demo/Main.hs
	new file:   cabal-testsuite/PackageTests/JS/JsSourcesExe/js-arch.test.hs
	new file:   cabal-testsuite/PackageTests/JS/JsSourcesExe/jsbits/lib.js
	new file:   cabal-testsuite/PackageTests/JS/JsSourcesExe/jssources-exe.cabal
	new file:   cabal-testsuite/PackageTests/JS/JsSourcesExe/other-arch.out
	new file:   cabal-testsuite/PackageTests/JS/JsSourcesExe/other-arch.test.hs
	new file:   cabal-testsuite/PackageTests/JS/JsSourcesExe/src/Lib.hs
	new file:   cabal-testsuite/PackageTests/JS/JsSourcesExe/srcJS/Lib.hs
	new file:   changelog.d/issue-8639

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   Cabal/src/Distribution/Simple/GHC.hs

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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[Mikolaj]

Since we are just releasing 3.10.2.0, let me close this backport in the light of #9061 (comment).