From: @hwhewei
Reviewed-by: @zhunaipan,@zh_qh
Signed-off-by: @zh_qh

The basic idea is: exploits data dependency to control the execution order
of side-effect operations, and keep the semantics of ANF unchanged.

The ControlDepend primitive is removed and there are two primitives added:

1. UpdateState:
```
  a = Assign(para, value)
```
became:
```
  a = Assign(para, value, u)
  u = UpdateState(u, a)
```

2. Load:
```
  x = Add(para, value)
```
became:
```
  p = Load(para, u)
  x = Add(p, value)
  u = UpdateState(u, p)
```

From: @r1chardf1d0
Reviewed-by: 
Signed-off-by:

From: @liangzhibo
Reviewed-by: 
Signed-off-by:

From: @tronzhang
Reviewed-by: @gaoxiong1,@ckey_dou
Signed-off-by: @ckey_dou

From: @david-he91
Reviewed-by: 
Signed-off-by:

From: @fangzehua
Reviewed-by: 
Signed-off-by:

From: @liubuyu
Reviewed-by: @kisnwang,@zhoufeng54
Signed-off-by: @zhoufeng54

From: @laiyongqiang
Reviewed-by: 
Signed-off-by:

From: @liubuyu
Reviewed-by: @zhoufeng54,@kisnwang
Signed-off-by: @kisnwang

From: @liu_xiao_93
Reviewed-by: @liangchenghui,@wuxuejian
Signed-off-by: @liangchenghui

From: @wilfchen
Reviewed-by: @cristoval,@limingqi107
Signed-off-by: @limingqi107

From: @huaweib
Reviewed-by: @jjfeing,@kisnwang
Signed-off-by: @kisnwang

From: @yao_yf
Reviewed-by: @stsuteng,@kisnwang
Signed-off-by: @stsuteng