Both shared & local classes, method selection

[Etienne via Digitalmars-d-learn]

On 2014-08-29 9:39 AM, Dicebot wrote:
> based on shared qualified I'd call it a smart ass one and never accepted
> it through code review :) Such things really need to be explicit, magic
> is worst enemy of multi-threading

The other option is to keep `__gshared ThreadSlot[Thread] gs_signals;` 
member and add a `NotifierSlot[] m_notifiers;` member, based on a 
boolean in the constructor `this(bool makeShared = true)`.

I wouldn't really want to make another class in the vibe.d interface and 
make this one forcefully shared, or should I?