refactor(nan): convert classes to using nan

This is the first step towards making all of these classes/methods
asyncrhonous. Everything was converted to using nan and nan types,
a number of crusty files were removed, the style cleaned up, as
well as a headers clean.

binding.gyp

@@ -4,20 +4,18 @@
       'target_name': 'libvirt',
       'product_prefix': 'lib',
       'sources': [
-        'src/worker.cc',
         'src/node_libvirt.cc',
-        'src/event_impl.cc',
-        'src/domain.cc',
-        'src/error.cc',
         'src/hypervisor.cc',
+        'src/error.cc',
+        'src/worker.cc',
         'src/interface.cc',
         'src/network.cc',
         'src/network_filter.cc',
         'src/node_device.cc',
         'src/secret.cc',
         'src/storage_pool.cc',
         'src/storage_volume.cc',
-        'src/stream.cc',
+        # 'src/domain.cc',
       ],
       'include_dirs' : [
         "<!(node -e \"require('nan')\")"
@@ -29,9 +27,9 @@
               '<!@(pkg-config --libs libvirt)'
             ]
           },
-	  'cflags': [
-	    '<!@(pkg-config --cflags libvirt)'
-	  ],
+          'cflags': [
+            '<!@(pkg-config --cflags libvirt)'
+          ],
         }]
       ]
     }

src/error.h

@@ -2,11 +2,17 @@
 #ifndef SRC_ERROR_H_
 #define SRC_ERROR_H_
 
-#include "node_libvirt.h"
+#include <nan.h>
+
+#include <libvirt/libvirt.h>
+#include <libvirt/virterror.h>
+
+using namespace v8;
+using namespace node;
 
 namespace NodeLibvirt {
 
-class Error : ObjectWrap
+class Error : public ObjectWrap
 {
 public:
   static void Initialize();