Added Debian Wheezy 7.4 amd64

Added Debian Wheezy 7.4 amd64 (Minimal + VirtualBox Guest Additions 4.3.0, 2014.02.21)
Merge pull request #276 from Coaxial/master

Added Debian Wheezy 7.4 amd64 (Minimal + VirtualBox Guest Additions 4.3.0, 2014.02.21)