New and improved ghc-in-ghci target

Hi all, My patch to improve the ghc-in-ghci target just got merged a few minutes ago. Now from a clean tree it only takes a few minutes to launch the target. You can now load ghc into ghci by running the following script: ./hadrian/ghci.sh https://gitlab.haskell.org/ghc/ghc/tree/master/hadrian#fast-feedback-using-g... Please try it out and open tickets if there are any issues on your system. Matt