Bug 310494 [LinkedResources] Preference "Link and create virtual folders" does not work
I20100425-2000 The 2 options on the Linked Resourced with name "Link and create virtual folders" don't work. When they are selected, dropping items does nothing. In CopyFilesAndFoldersOperation#copyOrLinkFiles(..), the test "hasFlag(dropOperation, ImportTypeDialog.IMPORT_VIRTUAL_FOLDERS_AND_LINKS)" always fails because dropOperation is always COPY.
bundles/org.eclipse.ui.ide/extensions/org/eclipse/ui/actions/CopyFilesAndFoldersOperation.java
}
				return NLS
						.bind(
								IDEWorkbenchMessages.CopyFilesAndFoldersOperation_resourceDeleted,
								sourceResource.getName());
			}
			if (!destination.isVirtual()) {
			if (sourceLocation.equals(destinationLocation)) {
				return NLS
						.bind(
								IDEWorkbenchMessages.CopyFilesAndFoldersOperation_sameSourceAndDest,
								sourceResource.getName());
			}
			
			if (new Path(sourceLocation.toString()).isPrefixOf(new Path(
					destinationLocation.toString()))) {
				return IDEWorkbenchMessages.CopyFilesAndFoldersOperation_destinationDescendentError;
			}
			}
			String linkedResourceMessage = validateLinkedResource(destination,
					sourceResource);
			if (linkedResourceMessage != null) {
				return linkedResourceMessage;
			}
		}
		return null;
	}
	/**
	 * Validates that the given source resources can be copied to the
	 * destination as decided by the VCM provider.