util: remove unnecessary check in open_terminal()
util: change some -1 returns to -EINVAL
util: don't strip /dev prefix twice in tty_is_vc()
shared: use strlen() + 1 instead of sizeof where relevant
util: add glusterfs and fuse.fstype as network file systems
shared: memset() makes set data and length ambiguous, so use memzero() from macro.h
sd-daemon: introduce sd_pid_notify() and sd_pid_notifyf(), which operate on a parameter-specified PID
sd-daemon: update pkg-config
notify: use sd_pid_notify()