reduce the amount of monitoring probes down to 33% or less to save hub reporting load
Switch to autotools to avoid maintaining ugly Makefile platform hacks.

The existing approach does not work on AIX (and possibly others).
Fix tests on esoteric platforms where gmake is a better choice.
Merge pull request #281 from estenberg/limit-ootb-monitoring

reduce the amount of monitoring probes down to 33% or less
Disable package tests on platforms the tests haven't been adapted to.