more autotools / git stuff.
Merge branch 'master' of https://github.com/koppi/serial-latency-test
Merge branch 'master' of https://github.com/koppi/serial-latency-test
Merge branch 'master' of https://github.com/koppi/serial-latency-test
Merge branch 'master' of https://github.com/koppi/serial-latency-test
remove m4 files.
remove m4 files.