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

1. fix the tainted variable 'path'
2. capitalize constants in env_config_parser
3. move constants about attribute to common utils.h

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

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

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

Move auto monad eliminator out from CSE.
Eliminate auto monad nodes for output node.

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

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

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

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

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

From: @HulkTang
Reviewed-by: @zhoufeng54,@chujinjin
Signed-off-by: @chujinjin

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

1. Remove output parameter pool for ascend control flow;
2. Remove duplicate code for Switch and SwitchLayer;
3. Add 'return' attribute to label_goto that used for return;
4. Disable tail call optimize for graphs with 'recursive' flag.

From: @liangzhibo
Reviewed-by: @kingxian,@jpc_chenjianping
Signed-off-by: @kingxian

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

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

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

Signed-off-by: zhupuxu <zhupuxu@huawei.com>

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: