Load entire file, as a char array.

[Chris Katko via Digitalmars-d-learn]

This should be simple? All I want to do is load an entire file, 
and access individual bytes. The entire thing. I don't want to 
have know the file size before hand, or "guess" and have a 
"maximum size" buffer.

So far, all google searches for "dlang binary file read" end up 
not working for me.

Thank you.