Merge pull request #41 from arlolra/probably

Don't warn in if LXC.

bin/gbuild

@@ -137,7 +137,7 @@ OptionParser.new do |opts|
   end
 end.parse!
 
-if !File.exist?("/dev/kvm")
+if !ENV["USE_LXC"] and !File.exist?("/dev/kvm")
     $stderr.puts "\n************* WARNING: kvm not loaded, this will probably not work out\n\n"
 end