Update gemspec file manifest and bump version to 0.3.9 for github gem

rack-cache.gemspec

@@ -3,8 +3,8 @@ Gem::Specification.new do |s|
   s.required_rubygems_version = Gem::Requirement.new(">= 0") if s.respond_to? :required_rubygems_version=
 
   s.name = 'rack-cache'
-  s.version = '0.3.0'
-  s.date = '2008-12-28'
+  s.version = '0.3.9'
+  s.date = '2009-03-07'
 
   s.description = "HTTP Caching for Rack"
   s.summary     = "HTTP Caching for Rack"
@@ -31,34 +31,25 @@ Gem::Specification.new do |s|
     example/sinatra/app.rb
     example/sinatra/views/index.erb
     lib/rack/cache.rb
-    lib/rack/cache/config.rb
-    lib/rack/cache/config/busters.rb
-    lib/rack/cache/config/default.rb
-    lib/rack/cache/config/no-cache.rb
+    lib/rack/cache/cachecontrol.rb
     lib/rack/cache/context.rb
-    lib/rack/cache/core.rb
     lib/rack/cache/entitystore.rb
-    lib/rack/cache/headers.rb
     lib/rack/cache/key.rb
     lib/rack/cache/metastore.rb
     lib/rack/cache/options.rb
     lib/rack/cache/request.rb
     lib/rack/cache/response.rb
     lib/rack/cache/storage.rb
-    lib/rack/utils/environment_headers.rb
     rack-cache.gemspec
     test/cache_test.rb
-    test/config_test.rb
+    test/cachecontrol_test.rb
     test/context_test.rb
-    test/core_test.rb
     test/entitystore_test.rb
-    test/environment_headers_test.rb
-    test/headers_test.rb
     test/key_test.rb
-    test/logging_test.rb
     test/metastore_test.rb
     test/options_test.rb
     test/pony.jpg
+    test/request_test.rb
     test/response_test.rb
     test/spec_setup.rb
     test/storage_test.rb