Fix #2529: explicit protection package #3651

[Walter Bright via Digitalmars-d-announce]

On 8/19/2014 7:01 AM, Dicebot wrote:
 > Walter, now that release is out can you please state your opinion about
 > https://github.com/D-Programming-Language/dmd/pull/3651 ? It is blocking Phobos
 > module split and decoupling.

I keep thinking there's gotta be a way to do this without language changes.