Single-thread processes

[Cecil Ward]

If your program is such that one process will never ever involve 
multiple threads, because it simply doesn’t apply in your 
situation, then would it be worthwhile to have a "version 
(D_SingleThread)" which would get rid of the all-statics in TLS 
thing and make __g shared into a respectable, fully-ok storage 
class modifier that is fine in @safe code. What do you think? 
That way, you would be documenting what you’re doing and would 
not need to have any TLS-statics overhead?