* Setting GNU99/C99 standard for subprojects
* Remove use of `add_global_arguments`
* Added extern "C" linkage specification to some public headers of rizin
* Changed the meson_git_wrapper.py-script to explicitly specify the output-path
* Made the RIZIN_BUILD_PATH conditional in the integration-test meson-build
Co-authored-by: amibranch <amibranch@users.noreply.github.com>