v2.4

CMake

• qi_stage_script is now implemented, and it’s now possible to stage Python scripts too.
• Add qi_generate_trampoline
• qi_add_test now also uses find_program to find test executable.
• API break: you should now use BUILD_PERF_TESTS=OFF instead of BUILD_PERFS_TESTS=OFF when you do not want to build the performance tests
• Fix using qi_add_perf_test on Windows when building in debug