Opt contention: support tcmalloc GetStackTrace and reduce hash calculations

[chenBright]

What problem does this PR solve?

Issue Number:

Problem Summary: SampledContention的哈希值只需要计算一次。

What is changed and the side effects?

Changed:

Side effects:

• Performance effects(性能影响):

• Breaking backward compatibility(向后兼容性):

---

Check List:

• Please make sure your changes are compilable(请确保你的更改可以通过编译).
• When providing us with a new feature, it is best to add related tests(如果你向我们增加一个新的功能, 请添加相关测试).
• Please follow Contributor Covenant Code of Conduct.(请遵循贡献者准则).

[wwbmmm]

LGTM

[chenBright]

tcmalloc GetStackTrace的性能优于glibc backtrace的。当链接了tcmalloc时，优先使用tcmalloc GetStackTrace。