cppcheck: 2.9.3 -> 2.10
Note, the "bug hunting" feature was removed from version 2.10. It is
now only available in the "premium" version of cppcheck. See
https://github.com/danmar/cppcheck/commit/8f386e15fdedff37486c683d933ccc9a1e307388
We also add a basic installation check to avoid issues in the future.