From: @yanglf1121
Reviewed-by: 
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From: @zhoufeng54
Reviewed-by: @kisnwang,@xu-yfei
Signed-off-by: @xu-yfei

From: @david-he91
Reviewed-by: @liangchenghui,@guoqi1024
Signed-off-by: @liangchenghui

From: @liujunzhu
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From: @xu_anyue
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From: @heleiwang
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From: @luopengting
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From: @lianliguang
Reviewed-by: @kisnwang,@chujinjin
Signed-off-by: @chujinjin

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

From: @tina_mengting_zhang
Reviewed-by: @mikef,@robingrosman
Signed-off-by: @robingrosman

From: @tom__chen
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From: @peilin-wang
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From: @peilin-wang
Reviewed-by: @tom__chen,@robingrosman
Signed-off-by: @robingrosman

fix testcases in c_api_transforms_test.cc

From: @islam_amin
Reviewed-by: @john_tzanakakis,@tom__chen
Signed-off-by:

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

From: @yepei6
Reviewed-by: @kingxian,@kisnwang
Signed-off-by: @kingxian

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

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

Signed-off-by: zhoufeng <zhoufeng54@huawei.com>

1. add trigger point
2. reduce unuse import
3. modify GetRealFilePath

---
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: @ffeiding
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From: @jojobugfree
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From: @caojian05
Reviewed-by: @oacjiewen
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From: @yuchaojie
Reviewed-by: @kisnwang
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From: @lihongkang1
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From: @jachua
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From: @louie5
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From: @jiangzg001
Reviewed-by: @liangchenghui,@wuxuejian
Signed-off-by: @liangchenghui

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

From: @zhoufeng54
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From: @liubuyu
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From: @xiefangqi
Reviewed-by: @liucunwei,@liucunwei,@heleiwang
Signed-off-by: @liucunwei

From: @jojobugfree
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From: @jojobugfree
Reviewed-by: @chujinjin,@jjfeing
Signed-off-by: @chujinjin

From: @irmo
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From: @lizhenglong1992
Reviewed-by: @heleiwang,@liucunwei
Signed-off-by: @liucunwei