* add back JIT testing, enclosed in #ifdef blocks

* fix typo

* nits

* WITH_SERIALIZATION_JIT->WITH_SERIALIZATION_JIT_ROUNDTRIP_TESTING

* fix self-reference leaks: now uses weak function ptr in reverse function mappings

* Move clang-tidy checks back to Linux

Recent changes in the GHA runners for macOS don't play well with clang-tidy; rather than sink any more time into debugging it, I'm going to revert the relevant parts of #7746 so that it runs on the less-finicky Linux runners instead.

* bogus

* Update Generator.cpp

* Update Generator.cpp

* call copy_to_host before serializing buffers

* throw an error if we serialize on-device buffer

* Skip specialize_to_gpu

* Update Pipeline.cpp

* Skip two more tests

* use serialize to memory during jit testing

* makefile update

* makefile fix

* skip the tutorial if flatc is not there

* fix

* fix signature

* fix makefile

* trigger buildbot

---------

Co-authored-by: Steven Johnson <srj@google.com>