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: @qujianwei
Reviewed-by: 
Signed-off-by:

From: @gengdongjie
Reviewed-by: @liangchenghui,@oacjiewen
Signed-off-by: @oacjiewen

From: @yufan1012
Reviewed-by: 
Signed-off-by:

add for connect table

fix some bug

fix pylint

fix for create dataset

fix dataset bug

fix for create dataset problem

add for svt icdar2015 convert script

fix for ctpn problem

fix for vgg16

From: @sishuikang
Reviewed-by: @zhanghaibo5,@zhang_xue_tong
Signed-off-by: @zhanghaibo5

From: @qujianwei
Reviewed-by: @c_34,@linqingke
Signed-off-by: @linqingke

From: @wuxuejian
Reviewed-by: @liangchenghui,@c_34
Signed-off-by: @liangchenghui

From: @sishuikang
Reviewed-by: @zhanghaibo5,@zhang_xue_tong
Signed-off-by: @zhanghaibo5

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

From: @zhouyaqiang0
Reviewed-by: @wuxuejian,@oacjiewen,@wuxuejian
Signed-off-by: @wuxuejian

From: @shuzigood
Reviewed-by: @wuxuejian,@linqingke
Signed-off-by: @wuxuejian

From: @sl_wang
Reviewed-by: @wang_zi_dong
Signed-off-by:

更换文件名

From: @alouhahahahaha
Reviewed-by: @kisnwang
Signed-off-by:

From: @shibeiji
Reviewed-by: @c_34,@guoqi1024
Signed-off-by: @c_34

From: @wuxuejian
Reviewed-by: @c_34,@liangchenghui,@oacjiewen,@liangchenghui
Signed-off-by: @liangchenghui

From: @caojian05
Reviewed-by: @wuxuejian,@oacjiewen
Signed-off-by: @wuxuejian

From: @caojian05
Reviewed-by: @wuxuejian,@liangchenghui
Signed-off-by: @wuxuejian

From: @hanhuifeng2020
Reviewed-by: @gaoxiong1,@anyrenwei
Signed-off-by: @anyrenwei

From: @i_yangmh
Reviewed-by: @wang_zi_dong,@kisnwang
Signed-off-by: @kisnwang

From: @sl_wang
Reviewed-by: @guoqi1024
Signed-off-by:

From: @wtcheng
Reviewed-by: @guoqi1024,@kisnwang
Signed-off-by: @guoqi1024

From: @caojian05
Reviewed-by: @wuxuejian,@oacjiewen,@liangchenghui
Signed-off-by: @liangchenghui

From: @sishuikang
Reviewed-by: @zhanghaibo5,@zhang_xue_tong
Signed-off-by: @zhanghaibo5