[fpc-pascal]RTL thread safety

[Peter Vreman]

> 
> What parts of the RTL are NOT thread safe and why?
> 
> I.e. what should I avoid if I want to create
> a threaded program with FPC?
> 
> Well, this may be a too big on to answer,
> but shoot me ;-)

At least the Heapmanager and IO. So no classes and objects creation etc. becuase they use
the heap.

The reason why they are not thread safe is very simple... NO TIME!