take advantage of C::AC 0.23
Moved back to MakeMaker ...

Since it seems, Module::Build is very bad maintained, it's unfortunately
necessary to deal with all the crappy automatisims in MakeMaker again :(
OTOH - when issues are reported, there seems to be a maintainer who cares
Use a README.md as Github Frontpage
add a simple leak-test

proving whether Unix::Statgrab leaks to figure out the cause of issue#4