sync: from linuxdeepin/dtkgui

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Synchronize source files from linuxdeepin/dtkgui.

Source-pull-request: linuxdeepin/dtkgui#313

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关键摘要:

• 使用了宏定义和全局静态对象，确保这些宏定义和全局对象在多线程环境下是安全的。
• 修改了Q_GLOBAL_STATIC的使用，增加了参数列表，这可能是为了初始化对象时提供更多的配置选项。

是否建议立即修改:

• 否，当前的修改看起来是为了改进对象的初始化方式，没有明显的错误或问题。但是，需要确保DTK_CORE_NAMESPACE::DConfig::globalThread()和DTK_CORE_NAMESPACE::DSGApplication::id()的返回值是正确的，并且这些修改不会引入新的问题。