Features:
+* general: get rid of readdir_r/dirent_storage stuff, it's unnecessary on Linux
+
* add API to clone sd_bus_message objects
* sd-bus: synthesized messages should get serial number (uint32_t) -1
* remove NSS usage from PID 1 (notably the specifiers)
* socket-proxyd:
- - Support multiple inherited sockets mapped to different remote hosts
- Use a nonblocking alternative to getaddrinfo
- Until we can start daemons directly, find a less ugly, less racy alternative than shell scripts for the second man page example.
- Support starting daemons directly without requiring a shell script; update man pages