DMD 0.177 release

[Boris Kolar]

== Quote from Kirk McDonald (kirklin.mcdonald at gmail.com)'s article
> Bill Baxter wrote:
> One issue I have with allowing struct constructors is that the existence
> of struct constructors implies the existence of struct destructors. Do
> we really want to go that far?

I certainly do :) Since struct types are always known at compile-time,
structs without destructors should not be affected. I think struct
destructors will be very useful (RIAA, custom allocation/deallocation
strategies).