* Add warnings when we got errors while parsing rexeps

* Update documentation

* Create listen sock for lmtp in main processes dispatcher to allow multiply lmtp workers
* Fix logic of logging

* Add ability to define variables in modules blocks
* Add symbolic aliases for statfile sections

* Add documentation for rspamd regexp module

* Change logic of statfile pool:
  - statfiles hash is no longer shared hash as we have per-process uniq things like current section or offset in statfile
  - introduce shared hash of statfiles mmapped areas to avoid multiply mmaps of the same file

  - move memcached servers setting to config hash
  - eval config file before any actions
  - move daemonization code after all subs
  - fix searching in domains for redirector's check

* Add more strict login
* Add new header Queue-ID to protocol
* Log message id or queue id
* Add config file for redirector
* Add ability to set regexp and domains list to check with redirector

* Lower debug level for some errors (INFO to DEBUG)

 - NULL string when trying to check url regexp
 - double free of message byte array as mime_stream frees memory in array if it thinks that stream is
   owner of array's memory

  totally impossible in that code)

* Do not write to log file if we cannot open it

* Do not write to log if we don't do any read operation in dispatcher library

* Add ability to drop privilleges of rspamd processes
* Add ability to install redirector with rspamd
* Add FreeBSD start scripts for rspamd and redirector
* Remove command line parsing from util.c as it has specific usage only in main process

* Check SO_ERROR on socket immideately after connect/bind to avoid resourses allocation for
  unsuccessful connections
* Avoid descriptors leakage when we create sockets and have errors on them
* Set on all socket descriptors FD_CLOEXEC flag to avoid problems with executing LDA

* Add ability to attach string lists to symbols
* Check destructors and do not add identical destructors (argument and function) to pool's destructors
* Remove 2 warnings when building with gmime22
* Attach url names to surbl symbols
* Fix bug with blocking on read (I think it is linux specific thought)

* Ignore SIGPIPE globally as dispatcher performs check of all write (2) calls

* Fix log output for surbl

* Fill task structure with zeroes in url-extracter

* Fix soft-shutdown of dispacther
* Turn debug on by default in cmake
* Change logic of save points

* Fix rspamc to understand lmtp and delivery sections in config
* Fix parser's states when reading module options
* Add sample config for surbl module with comments

--HG--
rename : rspamc.pl => rspamc.pl.in

* Add -t option for config testing
* Try to search default config in install prefix not in current directory

* Add documentation for Mail::Rspamd
* Add install targets to cmake

--HG--
rename : perl/rspamd.pm => perl/Rspamd.pm
rename : perl/rspamd.xs => perl/Rspamd.xs

* Add e-mail address validation in lmtp

* Add wanna_die flag that can be used in dispatcher's callbacks