Update memtestplus to 4.00. (With permission from smb@.)

Changes since 2.10:

Enhancements in v4.00:

* New Features
- Major Architectural changes
- First pass twice faster (reduced iterations)
- Detect DDR2/3 brands and part numbers on Intel DDR2/3 chipsets
- Added detection for Intel "Clarkdale" CPU
- Added detection for Intel "Gulftown" CPU
- Added detection for AMD "Magny-Cours" CPU
- Added detection for Intel XMP Memory
- Added for CPU w/ 0.5/1.5/3/6/12/16/18/24MB L3
- Added "clean" DMI detection for DDR3/FBDIMM2
- Better detection of Integrated Memory Controllers

* Bug Fixes
- Corrected detection for Intel "Lynnfield" CPU
- Corrected detection for AMD 45nm K10 CPU
- Solved crash with AMD Geode LX
- Complies with SMBIOS 2.6.1 specs
- Fixed compilation issues with gcc 4.2+
- Many others bug fixes

Memtest86+ "3.00" was skipped and renamed 4.00 in order to avoid confusion with the original Memtest.

Enhancements in v2.11 :
- Added support for Intel Core i5 (Lynnfield) CPU
- Added support for Intel P55 Southbridge
- Added support for Intel PM45/GM45/GM47 Mobile chipset
- Added support for Intel GL40/GS45 Mobile chipset
- Corrected DDR2/DDR3 detection on Intel x35/x45
- Corrected detection on some Core i7 CPU
- Fixed a bug with some AMI BIOS (freeze at startup)
- Various bug fixes

(jakllsch)