Forcibly set spec.date in test to fix rubygems change to 1980 as default

[git-p4: depot-paths = "//src/hoe/dev/": change = 14475]

Author: zenspider

test/test_hoe.rb

@@ -365,6 +365,7 @@ def test_possibly_better
     files = File.read("Manifest.txt").split(/\n/)
 
     spec = hoe.spec
+    spec.date = nil # forces Date.today. default switched to 1980 for some reason
 
     urls = {
       "home"  => "http://www.zenspider.com/projects/hoe.html",