druntime investigation troubles

[Denis Shelomovskij]

Looks like `_STI_monitor_staticctor` is called by C runtime on Windows. 
And C runtime isn't open-source.

It creates troubles for investigation druntime (for me at least). Why is 
it so? Why not to call everything in C `main`, what's the reason?

If there is no list of stuff done before C `main` druntime isn't 
open-source for me because I can't understand what is taking place just 
with druntime sources.

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Денис В. Шеломовский
Denis V. Shelomovskij