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

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

Authors: John Tzanakakis, Adel Shafiei, Amir Lashkari, Islam Amin

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

From: @louie5
Reviewed-by: @ouwenchang,@lixiaohui33
Signed-off-by: @lixiaohui33

From: @lvchangquan
Reviewed-by: @kisnwang,@chujinjin
Signed-off-by: @chujinjin

used the flag "opt_level" to control GraphKernel,
0 means disabled while non-zero value means enabled.
the default value is controlled by context "enable_graph_kernel",
but if it's also set in "graph_kernel_flags", then the flag will prevail.

supported the whitelist and blacklist operators for GraphKernelExpander.
"enable_expand_ops", "enable_expand_ops_only", "disable_expand_ops".

From: @zyli2020
Reviewed-by: 
Signed-off-by:

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

From: @luopengting
Reviewed-by: @ouwenchang,@lixiaohui33
Signed-off-by: @lixiaohui33

1. support single name
2. add hash method for pair
3. move constructor and destructor of MemAddressInfo as public
4. remove graph_id
5. modify interval for somas info

From: @VectorSL
Reviewed-by: @cristoval,@chujinjin
Signed-off-by: @chujinjin

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

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

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

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

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

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: @HulkTang
Reviewed-by: 
Signed-off-by:

From: @gzhcv
Reviewed-by: @ouwenchang,@lilongfei15
Signed-off-by: @lilongfei15

From: @yanghaitao1
Reviewed-by: @wangyue01,@lilongfei15
Signed-off-by: @lilongfei15