FYI - mo' work on std.allocator

[Andrei Alexandrescu via Digitalmars-d]

Added SbrkRegion, SimpleBlocklist, and Blocklist.

http://erdani.com/d/phobos-prerelease/std_allocator.html#.SbrkRegion
http://erdani.com/d/phobos-prerelease/std_allocator.html#.SimpleBlocklist
http://erdani.com/d/phobos-prerelease/std_allocator.html#.Blocklist

https://github.com/andralex/phobos/blob/allocator/std/allocator.d

Destruction is as always welcome. I plan to get into tracing tomorrow 
morning.


Andrei