By the previous commit, networkd now exposes the received DHCP message
in the Descibe() DBus/Varlink method. Let's make networkctl deserialize
the DHCP message and use it where necessary.
Now that the necessary functions from log.h have been moved to macro.h,
we can stop including log.h in macro.h. This requires modifying source
files all over the tree to include log.h instead.
Yu Watanabe
Daan De Meyer
Lennart Poettering