Supporting latest LLVM version

[mtsokol]

Hi! Thank you so much for this tutorial!
It's a great explanation for multitude of different compiler/MLIR concepts in one place.

FYI I'm using a separate LLVM build, which is the latest LLVM version, changing:

-include_directories(${PROJECT_SOURCE_DIR}/externals/llvm-project)
+include_directories("/path/to/llvm-project-main/")

FYI the only part that required updating was:

-    mlir-cpu-runner
+    mlir-runner

in tests/CMakeLists.txt as it changed recently.

[j2kun]

If you want to push a PR with these changes (and bump to the latest LLVM commit hash) I'd be happy to merge it.

[mtsokol]

Sure! Here's a PR with changes that were needed to run it with newer LLVM: #46

[mtsokol]

Fixed in #46.