code optimizing: don't return reference or pointer of member variable…

…s in pika_server

set timeout to 30s in trysync

2.1.2

1) move rpath to Makefile.global;

2) modify used_memory of InfoCmd to the sum of db_memtable and db_tablereader;

bugfix: rpush may not work after ltrim (1 -1)

Merge branch 'master' of https://github.com/Qihoo360/pika

rename the name of some tools and add parse_manifest tool

delete redis_version field from info

update version to 2.0.3

bugfix: rwlock didnt work for flushall and readonly