Stack trace linux/windows why the difference

[Domingo Alvarez Duarte via Digitalmars-d]

After writing this post I found the place and the why:
- druntime/src/core/runtime.d
- Window implementation has extra code that search for more info 
to display
- Linux only make calls to execinfo functions and dump what it 
gets

On linux more work should be done to get line infos, I'm 
investigating how to get then.

Cheers !