Merge pull request #54 from dottedmag/rspamd-0.6

Last-minute fixes
Add utility to convert ip to int.
Fix plugins.
Handle invalid IP addresses.
Update plugins.
Fix hfilter.

Conflicts:

	conf/lua/hfilter.lua
In ubuntu hiredis is libhiredis.
Fix misusage of ip object.
Fix dkim parser for old glib.

Issue:	#56
Reported by:	@eneq123
Fix /run/rspamd creation in initscript