These changes create instability on development images in
conjunctio with mount for core.git: since files move they
exist in two places at once, maybe screwing up the system.
There's no sensible way other than asking for or building
a new snapshot package for opnsensense and going from there.
Make "src" the implicit "/usr/local" so that nobody can
sneak in weird files in the base file system or potentially
overwrite them.
This is the last time, I swear... :)
