Merge pull request #18 from HuiLi/master

Merge pull request #34 from MinfeiZhou/master
Merge pull request #19 from HuiLi/master

合并更新
Merge pull request #20 from HuiLi/master

合并更新
update vdbe.c，vdbeaux.c，vdbeInt.h

更新Opcode: MakeRecord，以及vdbeaux.c，vdbeInt.h中相关的代码。
Merge pull request #21 from HuiLi/master

合并更新
update vdbe.c, sqliteInt.c

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

update Opcode: AutoCommit
Merge pull request #22 from HuiLi/master

合并更新
Merge pull request #46 from MinfeiZhou/master

update vdbe.c，vdbeaux.c，vdbeInt.h，sqliteInt.c