The point here is to disable the "checkNotNewerThanCompiler" check because it
breaks a real life use case of compiling with an old compiler against the new
runtime library (that may come implicitly as a transitive dependency of another
library). However, to keep the possibility of restoring this check in the
future without backporting the needed changes into the old branches, we now
only perform this check for the "Core" runtime components, and all other checks
-- for "Core" and "Main" runtime components. In the follow-up commit, we change
the runtime component of our libraries to "Main". If we decide we need the
"checkNotNewerThanCompiler" behavior in the future, we can change the runtime
component to "Core", effectively restoring this check in the old compilers
Alexander Udalov
139d37cfd0