Funtrace - initial release

The first release of funtrace. After unzipping, run ./simple-example/build.sh and then ./simple-example/run.sh, see README.md (the "Trying funtrace" section) for troubleshooting (eg no -fxray-shared flag in clang, or ftrace permission issues) and what to do next.

NOTE: this release is has a bug - it's fixed in the zip file but not in the source archives