[llvm] [flang-rt] Add support for logical binary input edit descriptor (PR #193490)

[Eugene Epshteyn via llvm-commits]

eugeneepshteyn wrote:

Also, if this is an extension, it needs to be documented in https://github.com/llvm/llvm-project/blob/main/flang/docs/Extensions.md

https://github.com/llvm/llvm-project/pull/193490