Convert big2wire to wire2host which makes more sense

I'm pretty sure that's what this macro is for..
Ignore more temp files
Remove unnecessary __APPLE__ clause in byteswap
Run all the built cmocka tests as part of the `make test` target
Add /usr/local/include to all Makefiles, god place to pick up uuid/uuid.h
Starting to figure out how to test code in liblaunch.c

This code was mostly written on an airplane, and is just exploring how I might
write unit tests for specific functions in liblaunch.c