Require jruby-rack 1.0.0 or greater from here on

Rakefile

@@ -33,7 +33,7 @@ begin
     p.summary = "Warbler chirpily constructs .war files of your Rails applications."
     p.changes = p.paragraphs_of('History.txt', 0..1).join("\n\n")
     p.description = p.paragraphs_of('README.txt', 1...2).join("\n\n")
-    p.extra_deps += [['rake', '>= 0.8.7'], ['jruby-jars', '>= 1.4.0'], ['jruby-rack', '>= 0.9.8'], ['rubyzip', '>= 0.9.4']]
+    p.extra_deps += [['rake', '>= 0.8.7'], ['jruby-jars', '>= 1.4.0'], ['jruby-rack', '>= 1.0.0'], ['rubyzip', '>= 0.9.4']]
     p.clean_globs += ['spec/sample/MANIFEST*', 'spec/sample/web.xml*']
   end
   hoe.spec.files = MANIFEST