Rename std.string.toStringz?

[Jonathan M Davis]

Okay, clearly we're not going to reach any kind of consensus on this. We seem 
to be pretty thoroughly split between those who want to keep it as toStringz 
and those who want to rename it to toCString. Interestingly enough, _no one_ 
seems to want to go with just camelcasing it to toStringZ. But regardless, 
without anything close to a consensus on this, it wouldn't make any sense to 
change the function's name and break all of the code that doing that would 
break. So, it's going to stay toStringz.

I'll look at renaming toUTF16z to toWStringz to match toStringz (as was 
suggested by a couple of people in this thread), but I think that I'll wait to 
do that in a future pull request. As it is, both of those functions should 
arguably be augmented to take multiple string types, rather than just string 
or char[], which will take additional work, and that pull request is already 
large enough as it is. So, that can wait. But regardless, toStringz is staying 
toStringz.

- Jonathan M Davis