We're moving over to a model where we provide direct links to educational notes /
diagnostic group notes whenever relevant. Rendering the Markdown from these
files to the terminal is less relevant with this approach, so remove it from the
compiler.
There were two cache replay code exists, one for cache replay from
swift-frontend, the other for replay using C API from libSwiftScan. It
is easy to forget to update one copy when new specialized cache replay
logic is added for some output kinds. Now unify the replay logics to a
single location to avoid confusion. This is a rewrite of the existing
logic and NFCI.
Don't try to figure out the executable names during replay from
libSwiftScan.dylib. The actual executable path for the process actually
doesn't matter in this case to reconstruct the invocation and might
actually be misleading.
Just use `swift-frontend` as a placeheader executable name for
in-process cache replay.
rdar://132758308
Add support for serialized diagnostics, parseable output, and other
kinds of output from diagnostics engine to the libSwiftScan
replayCompilation API.
rdar://129015959
