testme.sh: nowadays some VM solutions tend to use "processor" word
in other places (like "model name: Common KVM processor")
booker.pl: escape left brace
- add parameter when calling that will be forwarded to make
(e.g. to give the correct -j# option for your CPU)
- timeout after running the tests for 2 minutes, assuming something went
wrong, but don't cancel the rest of the tests
- add compilation with clang (if available on the system)
