Added hardlink/symlink support for Windows Vista+.

Fixes #220.

core/gui/deletion_options.py

@@ -5,6 +5,8 @@
 # which should be included with this package. The terms are also available at 
 # http://www.hardcoded.net/licenses/bsd_license
 
+import os
+
 from hscommon.gui.base import GUIObject
 from hscommon.trans import tr
 
@@ -22,3 +24,15 @@ class DeletionOptions(GUIObject):
         self.view.update_msg(msg)
         return self.view.show()
     
+    def supports_links(self):
+        # When on a platform that doesn't implement it, calling os.symlink() (with the wrong number
+        # of arguments) raises NotImplementedError, which allows us to gracefully check for the
+        # feature.
+        try:
+            os.symlink()
+        except NotImplementedError:
+            return False
+        except TypeError:
+            # wrong number of arguments
+            return True
+