Update copyright and debian files.

Conflicts:

	debian/changelog
Misprint.
Merge pull request #47 from dottedmag/0.6

Fixes for manpages found by lintian
Merge remote-tracking branch 'dottedmag/0.6' into rspamd-0.6
Merge remote-tracking branch 'dottedmag/debian' into rspamd-0.6

Conflicts:
	debian/copyright
	debian/watch
Merge branch 'rspamd-0.6' of github.com:vstakhov/rspamd into rspamd-0.6
Rework resolver library.

Conflicts:

	src/dns.c
Rework LRU hash logic.
Use more adduser options to shorten preinst
Do not remove rspamd user in prerm (See #621833)
Fix name of pkg-config snippet for hiredis
Turn off bundled hiredis
Move preinst to postinst, rspamd does not need anything in preinst
Ship /var/{lib,log}/rspamd in package
/var/run is transient, create subdirectory in initscript instead
/var/lib/rspamd ownership is fixed, don't allow to override
Use /run/rspamd to store pid file, /var/run is obsolete
No need to specify group for chown explicitly
Use _rspamd as a system user in Debian
Use dh instead of CDBS