Log Message:
Update to 0.17

Upstream changes:
0.17
	- add option: --backlog to change the backlog size (default: SOMAXCONN) (thanks \ 
to Yuryu)

0.16
	- [bugfix] unset the environment variable when a file is removed from the \ 
directory specified by --envdir

0.15
	- added option: --envdir for reloading configuration (thanks to limitusus)
	- added options: --enable-auto-restart and interval for periodical automatic \ 
restarting (thanks to limitusus)
	- added option: --kill-old-delay for delaying SIGTERM (thanks to limitusus)

0.14
	- fix regression in 0.13; start_server wo. "--dir" was causing errors

0.13
	- add option: --dir (thanks to kazeburo)

0.12
	- bugfix: support for programs with whitespaces (thanks to clkao)
	- add option: --signal-on-term (thanks to miyagawa)