Adding Cygwin detection, and fixing pathing issue in VirtualBox driver under Cygwin

lib/vagrant/util/platform.rb

@@ -14,6 +14,10 @@ module Vagrant
           platform.include?("darwin9")
         end
 
+        def cygwin?
+	  platform.include?("cygwin")
+        end
+
         [:darwin, :bsd, :freebsd, :linux, :solaris].each do |type|
           define_method("#{type}?") do
             platform.include?(type.to_s)

plugins/providers/virtualbox/action/import.rb

@@ -12,7 +12,10 @@ module VagrantPlugins
 
           # Import the virtual machine
           ovf_file = env[:machine].box.directory.join("box.ovf").to_s
-          env[:machine].id = env[:machine].provider.driver.import(ovf_file) do |progress|
+          if Vagrant::Util::Platform.cygwin?
+            ovf_file = `cygpath -w #{ovf_file}`.chomp
+          end
+	  env[:machine].id = env[:machine].provider.driver.import(ovf_file) do |progress|
             env[:ui].clear_line
             env[:ui].report_progress(progress, 100, false)
           end