missing LambdaResolver.h

[baldmaggots]

Can you share what version of LLVM used to build this? Building on RedHat 8 results in

KaleidoscopeJIT.hpp:27:10: fatal error: llvm/ExecutionEngine/Orc/LambdaResolver.h: No such file or directory

Which appears to have been removed from LLVM as of

https://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20201012/842303.html