polyjit: add sub-experiment that runs perf tools
polyjit: add sub-experiment that runs perf tools

uses perf tools and FlameGraph to generate nice profiling graphs.

This requires the FlameGraph submodule to be checked out with
git submodule init

Otherwise it shouldn't do anything.

Missing in this subexperiment: Database integration

simbuerg/benchbuild,simbuerg/benchbuild