From: @zhangbuxue
Reviewed-by: @ginfung
Signed-off-by:

From: @chenfei52
Reviewed-by: 
Signed-off-by:

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

From: @zh_qh
Reviewed-by: @ginfung
Signed-off-by: @ginfung

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

From: @chenfei52
Reviewed-by: @ginfung,@zh_qh
Signed-off-by: @zh_qh

---
Remove the routine of handling isolated nodes in Renormalize.
Add isolated nodes from Parser&Resolver.
Modify isolated nodes handling in FG&Manager.
Optimize the renormalize routines.
Other optimizations.

From: @chenfei52
Reviewed-by: @ginfung,@zh_qh
Signed-off-by: @zh_qh

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

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

From: @hwhewei
Reviewed-by: @ginfung
Signed-off-by:

All Load nodes in a MakeTuple should use same monad if we are going to merge UpdateStates for them.

From: @chenfei52
Reviewed-by: @zh_qh,@ginfung
Signed-off-by: @zh_qh

Release all data after finished RDR checking.

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

Use more faster but not strict monad state check.

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: @liangzhibo
Reviewed-by: @ginfung,@zh_qh
Signed-off-by: @zh_qh

From: @yuan_shen_zhou
Reviewed-by: @liangchenghui
Signed-off-by: @liangchenghui

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

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

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