Enhancement request: enable manylinux builds

As of this writing I believe gopy does not support manylinux builds due to the fact that it requires libpython (libpython*.so) to be present. Manylinux builds are against static Python (see https://github.com/pypa/manylinux/issues/255 and https://github.com/pypa/manylinux/issues/30 for details). Can gopy be enhanced to build modules against static Python instead of the current libpython setup? I will look into a contribution for this if one of the regular maintainers thinks that it's feasible.

该 issue 没有指定任何文件或测试。首先追踪 gopy 当前如何定位并链接 libpython*.so，然后查看所链接的 manylinux 讨论和仓库的构建入口；完成的标准是具备一条可维护的静态 Python 构建路径，支持 manylinux 模块，并有相应的验证。

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