1、使用分布式锁选举进行淘汰操作的写入者；2、提高obsolete状态的value读取速度；

src/entry/Maat_rule.cpp

@@ -30,7 +30,7 @@
 #include "stream_fuzzy_hash.h"
 #include "gram_index_engine.h"
 
-int MAAT_FRAME_VERSION_2_1_20180523=1;
+int MAAT_FRAME_VERSION_2_2_20180524=1;
 
 const char* CHARSET_STRING[]={"NONE","gbk","big5","unicode","utf8","bin",
 							"unicode_ascii_esc","unicode_ascii_aligned","unicode_ncr_dec","unicode_ncr_hex","url_encode_gb2312","url_encode_utf8",""};