dynamic library building and loading

[Rob T]

I am trying out gdc 4.7 branch with -fPIC, but the info I'm 
getting is that even with a successulf PIC build I will still not 
be able to reliably execute D functions directly from C/C++ code.

> Old patch, which shows what needs to be done:
> https://bitbucket.org/goshawk/gdc/issue/166/add-shared-lib-support#comment-648329

Does anyone know why patches like this are taking so [bleeping] 
long to get recognized and implemented?

-rt