increased vbox-slave memory to 6GB to build 4GB Win7 boxes
Merge branch 'master' of github.com:StefanScherer/basebox-slave

* 'master' of github.com:StefanScherer/basebox-slave:
  updated to Vagrant 1.6.5 + vagrant-vcloud 0.4.3
  vbox.extensions + tightvnc viewer on vmware-slave