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
* Use PR_SET_PROCTITLE_AREA if it becomes available in the kernel
-* %m in printf() instead of strerror(errno);
-
* pahole
* set_put(), hashmap_put() return values check. i.e. == 0 doesn't free()!