Features:
+* make use of the new statx mountid and rootmount fields in path_get_mnt_id()
+ and fd_is_mount_point()
+
* nspawn: move "incoming mount" directory to /run/host, move "inaccessible"
nodes to /run/host, move notify socket (for sd_notify() between payload and
container manager)
* make us use dynamically fewer deps for containers in general purpose distros:
o turn into dlopen() deps:
- - pcre2 (always) — irrelevant on Fedora, since dep by
- libselinux, but should benefit Debian
- libpwquality (always) - only relevant for homed, and maybe soon
firstboot
- elfutils (always)