* remove the unused is_native_tail_call_heuristic forward reference
This forward-reference from Lambda to Asmcomp was used to generate
machine-specific tailcall information in -annot output; this only use
was removed in 57d329e07b, so we can now
remove it to simplify the codebase.
The logic was non-trivial and might be useful again in the future.
* [minor] testsuite: convert warnings/w51.ml to an expect-test
* [minor] translattribute: refactor attribute payload deconstruction
* [@tailcall false]: warn if the call *is* a tailcall
(+ constructor renaming suggested by Nicolás during review)
* Changes
* testsuite: add an example with the 'invalid payload' exception
(suggested by Nicolás during review)
82b29828d2