move struct unit_info from dbus-common to control-response-util
build-sys: fix up uselessfs checks and remove systemctl binary from build
execute: indent
build-sys: remove unused traces of quotaon and quotacheck
special.h: remove unused macros for quotaon and quotacheck services
uselessfs: add fullpath method to store root path that is to be mirrored by us
control-response-util: remove dbus-common.h
control-request: add stubs for the rest of the unit file commands
control-response-util: implement function for obtaining unit file runtime argument from file
control-request: add a quick implementation for set-default-target
control-request: add unmask
control-request: add mask