Simplify signal handling with sigwait()
Remove FILE* variables
Refactoring
Consolidate achd and achcop daemonization
Build libachutil convenience library
Call openlog in achd
Change achcop default to close stdout/stderr
Notify parent process of success or failure of child
Use ACH_LOG macro in achd
Add option for achd to SIGUSR1 its parent upon startup
Give up if achd cannot contact server upon initial connection

* Probably means the user gave the wrong hostname