[flang-commits] [flang] [flang] Add Flang Call Notes documents (PR #180287)

[Alexis Perry-Holby via flang-commits]

AlexisPerry wrote:

> In general, LGTM.
> 
> I would prefer that the only informational reference to "classic flang" would be something like "if you are looking for information about classic flang, to go ".

README.md now only contains one sentence referring to Classic Flang with a link to a different website with further information.  Is this acceptable?

https://github.com/llvm/llvm-project/pull/180287