Merge pull request #45 from fatalbanana/master

Remove dated configuration example & add missing option registration
Fix nameservers setup.
Add Spameatingmonkey RBL and SURBL
Add metric for Spameatingmonkey RBL and SURBL
Fix setting for Spameatingmonkey RBL

Remove ipv6 support for RBL
Merge pull request #46 from AlexeySa/master

Added Spameatingmonkey RBL, URIBL and fresh URIBL
Fix memory leak in fuzzy_add command.
Update copyright and debian files.
Misprint.
Merge remote-tracking branch 'dottedmag/debian' into rspamd-0.6

Conflicts:
	debian/copyright
	debian/watch

Conflicts:

	debian/changelog
Rework LRU hash logic.
Fix empty messages processing.
Remove judy and use glib hash tables.

There is no significant advantage to use Judy arrays over glib
HashTables to store hashes in fuzzy storage. Therefore, drop support of
Judy completely. Also rename `use_judy` parameter to `strict_hash`
indicating that hashes are matched strictly (not a fuzzy match but a hash
lookup).
Move xxhash to contrib.
Rework bloom hash library to use XXHash.
Add rdns as a submodule.
Integrate rspamd with librdns.
Fix PTR requests handling.
Support accepting listening sockets from systemd.
Set cloexec flag to sockets obtained from systemd.