std.allocator ready for some abuse

[Andrei Alexandrescu]

On 10/27/13 3:52 AM, Tourist wrote:
> In the following line:
> ----------
> On Posix, forwards to realloc. On Windows, calls _aligned_realloc(b.ptr,
> newSize, platformAlignment).
> ----------
>
> Link is incorrect (http//, colon is missing).

Thanks, ouch, there were a few more bugs around there as well in the 
untested code.

Andrei