Prevent useless relinking when packaging

Previously rake would relink everything in the package directory even
when no file had changed.  This occurred because rake was told the
package directory was a file so it would attempt to recreate it by
linking all the files.

Now Rake knows the package directory is a directory and will not attempt
to recreated it unless the package file list changes.

Fixes #276

History.rdoc

@@ -13,6 +13,7 @@ Bug fixes:
 * Updated rake manpage.  Pull request #291 by skittleys.
 * Add Rake::LATE to allow rebuilding of files that depend on deleted files.
   Bug #286, pull request #287 by David Grayson.
+* Fix relinking of files when repackaging.  Bug #276 by Muenze.
 
 === 10.3.3
 

lib/rake/packagetask.rb

@@ -143,10 +143,7 @@ def define
         end
       end
 
-      directory package_dir
-
-      file package_dir_path => @package_files do
-        mkdir_p package_dir rescue nil
+      directory package_dir_path => @package_files do
         @package_files.each do |fn|
           f = File.join(package_dir_path, fn)
           fdir = File.dirname(f)