Added Windows support for the host machine and Ubuntu 14.04 as the guest OS (and a few bug fixes)

Hi guys,
Nice to meet Dan at the Drupalcon BoF meeting, we are now back to the virtual world :-) Let me introduce you to Vlad's new Windows support (and more Ubuntu 14.04). I know this should go into dev or its own branch, but as I started my branch merge from the shiny v0.9 (master) here, I thought my changes would be better displayed in a pull request at the master branch. Also, I've seen dev has not been updated to master so this should do. You may want to apply some of the patches to the Ubuntu 14.04 branch and/or the dev branch, and then start a new Windows branch (I labeled the 2 Windows commits). Just let me know, by the way I've tested these changes in my Windows 8.1 laptop, using Vagrant 1.6.5. Hope this helps, I will be looking forward to your comments.