[D-runtime] [D-Programming-Language/druntime] 81e4d3: clear bits pagewise

[GitHub via D-runtime]

  Branch: refs/heads/master
  Home:   https://github.com/D-Programming-Language/druntime
  Commit: 81e4d36a4997d23f1fd5899f1f99ed29f213b6fa
      https://github.com/D-Programming-Language/druntime/commit/81e4d36a4997d23f1fd5899f1f99ed29f213b6fa
  Author: Martin Nowak <code at dawg.eu>
  Date:   2015-02-01 (Sun, 01 Feb 2015)

  Changed paths:
    M src/gc/gc.d

  Log Message:
  -----------
  clear bits pagewise

- use a small local buffer (32-byte) to gather bits
- batch process all bits of a page


  Commit: 4948a99710945501508ff49fdba0563c5c065df9
      https://github.com/D-Programming-Language/druntime/commit/4948a99710945501508ff49fdba0563c5c065df9
  Author: Rainer Schuetze <r.sagitario at gmx.de>
  Date:   2015-02-03 (Tue, 03 Feb 2015)

  Changed paths:
    M src/gc/gc.d

  Log Message:
  -----------
  Merge pull request #1142 from MartinNowak/clrBits

clear bits pagewise


Compare: https://github.com/D-Programming-Language/druntime/compare/316702bb4260...4948a9971094