[AutoDiff] Add build-script flag for differentiable programming. #27596
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Mirror of upstream PR: #27595.
Wait for approval on upstream PR before testing/merging this PR to ensure changes are in sync.
Add
--enable-experimental-differentiable-programming
build-script flag.The build-script flag enables/disables standard library additions
related to differentiable programming. This will allow official Swift
releases to disable these additions.
The build-script flag is on by default to ensure testing of
differentiable programming standard library additions. An additional
driver flag must be enabled to use differentiable programming features:
#27446