Affects Version/s: None
Fix Version/s: None
Once upon a time, Charmonizer/Core/ConfWriter was name
"Charmonizer/Core/ModHandler". Now that it's been renamed, certain features
which belonged in a "module handler" no longer belong in a "config writer".
- test_compile -> moved to Compiler.
- capture_output -> moved to Compiler.
- _charm.h (file required by various probes) -> moved to Probe.
- _charm_run -> moved to OperatingSystem, hidden behind OS_run_quietly().
What's left behind are more targeted, focused Charmonizer core modules.