update
Merge pull request #15 from HuiLi/master

合并更新
Merge pull request #16 from HuiLi/master

合并更新
update vdbe.c

更新Opcode: Column，以及sqliteInt.c中涉及到的宏定义
update vdbe.c

更新Opcode: MakeRecord，Affinity
Merge pull request #17 from HuiLi/master

合并更新
Merge pull request #34 from MinfeiZhou/master

update vdbe.c, sqliteInt.c