- In CMake, not all of the tooling for Anderson2021 was included in packaging; now it is.
- Since the featurization_to_sample and get_host_target tools are 100% identical across all autoschedulers, they now get build only once, and don't get the `adams2019_` (etc) prefix they formerly did.
- conversely, the autotune_loop.sh and weightsdir_to_weightsfile tools now *do* get autoscheduler-specific prefixes, because they aren't interchangeable.
- Fixes to various scripts etc to use the correct tool names.
- When the Anderson2021 autoscheduler was added, we tried to factor out common coding and tooling, but went a bit too far: the weightsdir_to_weightsfile source was moved into common/, and while it and the related Weights source were identical, they needed to include *different* Featurization.h files, and so basically relied on the build rules building it twice, with a different include path each time. IMHO this is unreasonably fragile and weird, so I moved those sources back into the folders in question, as there isn't any compelling reason to keep these sources exactly in sync anyway.
- Same story for the test_function_dag test.

Note that I started to add support for Anderson2021 to the main Makefile, but it became painful to do -- it works fine for CMake, so I will leave adding Make support for someone who wants to use it there.