* Force statfile to work with float values

* Polish code and remove bugs found

* Add function to resolve stat file name

* Write test case for statistics files API

--HG--
rename : README-classify.koi8.txt => README-classify.utf8.txt
rename : README.koi8.txt => README.utf8.txt

* Adopt build system for new structure

--HG--
rename : cfg_file.h => src/cfg_file.h
rename : cfg_file.l => src/cfg_file.l
rename : cfg_file.y => src/cfg_file.y
rename : cfg_utils.c => src/cfg_utils.c
rename : controller.c => src/controller.c
rename : filter.c => src/filter.c
rename : filter.h => src/filter.h
rename : fstring.c => src/fstring.c
rename : fstring.h => src/fstring.h
rename : main.c => src/main.c
rename : main.h => src/main.h
rename : mem_pool.c => src/mem_pool.c
rename : mem_pool.h => src/mem_pool.h
rename : memcached-test.c => src/memcached-test.c
rename : memcached.c => src/memcached.c
rename : memcached.h => src/memcached.h
rename : perl.c => src/perl.c
rename : perl.h => src/perl.h
rename : plugins/regexp.c => src/plugins/regexp.c
rename : plugins/surbl.c => src/plugins/surbl.c
rename : protocol.c => src/protocol.c
rename : protocol.h => src/protocol.h
rename : upstream.c => src/upstream.c
rename : upstream.h => src/upstream.h
rename : url.c => src/url.c
rename : url.h => src/url.h
rename : util.c => src/util.c
rename : util.h => src/util.h
rename : worker.c => src/worker.c

* Add simple statistic structure that is placed in shared memory and used for gathering server's stats

* Handle log reopening

* Reflect changes to perl library

* Fix protocol and network functions
* Fix some memory allocation issues

* Add simple test case for shared memory allocation

* Add two behaviour types of memory allocator: greedy and ungreedy
* Adopt surbl module for new configure style

  convinient way to free objects in pool that was allocated by other
  memory allocation mechanics (e.g. GObject).
  Destructors must be added in pool manually by calling memory_pool_add_destructor
  function.

* Improve configure system by implementing dependencies
* Add .depend files for subdirs that requre it
* Write simple test for expressions parser

* Fix test suite build under linux

  this allows accessing to modules config from perl modules

  without calling of ~1000 free syscalls
* Add memory_pool_alloc0 for initializing newly allocated space in pool with zeroes

* Add some documentation to rspamd (about new filters logic and about protocol)

 - fix cases when new chunk is allocated
 - add memory pool allocator statistics
 - let it work in multi-threaded environment
 - add strdup function for convinience
* Use memory pool allocator more widely to avoid memory leaks in future and optimize performance
* Task pool chunk size is now pre-defined constant (16 Kb currently)

* Add test case for memory pools

* Make AV reference mortal as it is described in perlxs (3)

 - simplify protocol parsing logic
 - add compatibility with sa-spamd
 - TODO: add protocol output for all commands

 - memory pools would be used in modules for allocating task specific data without freeing it separately
 - memory pools growth is implemented as multiplying by 2 its length (for avoiding multiply reallocs)
 - when memory pool is freed all data that was allocated from this pool is freed too

* Fix memcached async library to pass test :)

* Rework build system

* Add some more tests to url testcase

TODO: fix html parsing regexp (now it doesn't work)