补充RoomPool对象的release逻辑。
Merge branch 'master' of https://github.com/VNOC/vnoc into AngryPowman
fix acquire method
fixed acquire bug
fixed increase pool size bug
completed chat message
Merge pull request #49 from lmykyo/master

I've rewrite the code of online user list.
Merge branch 'master' of https://github.com/VNOC/vnoc into AngryPowman

Conflicts:
	NetService/server.vcxproj.filters
	NetService/src/Room.cpp
	NetService/src/RoomPool.cpp
Add DBCached(based on sqlite3)
Add DBCached init()
Add sqlite3.lib, static library for sqlite3 in windows
fix get below linking erorr when try to build sqlite3 in release mode
Add sqlite3 dll for x86
complete message
fix mysql connection blocking problem when starting server
del DBCached
add execute() method
completed UT
Add query() method
fix query() bug/cache fetched rows data to Recordset