[Kde-pim] collectionStatusChanged throttling (was K3Process should be replaced by QProcess)

[Sam Bishop]

Volker Krause wrote:
> akonadi/libakonadi:
> Add throttling to the collectionStatusChanged() signal in Akonadi::Monitor, 
> ie. instead of emitting this signal directly, keep a list, remove duplicates 
> and use a timer to emit the signals every few msecs. This will improve 
> performance quite a lot when adding many items to a collection at once, since 
> now for every new item the total and unread mail count is retrieved. With 
> throttling the signal emission it will ideally just be a single time.

I'll claim this one.  Volker, I have an additional optimization idea. 
If fetchCollectionStatus is false, an empty CollectionStatus object is 
created and passed as the second argument.  Would it make sense to have 
a class-static, dummy CollectionStatus object made just for that 
purpose?  I'll make that change too, if you'd like.

Thanks,
Sam
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