Add legacy constant names explicitly, fixes fog#34

Author: smathy

lib/fog/rackspace.rb

@@ -36,7 +36,7 @@ module Rackspace
     autoload :CDNV2, File.expand_path('../rackspace/cdn_v2', __FILE__)
     autoload :Compute, File.expand_path('../rackspace/compute', __FILE__)
     autoload :ComputeV2, File.expand_path('../rackspace/compute_v2', __FILE__)
-    autoload :Database, File.expand_path('../rackspace/databases', __FILE__)
+    autoload :Databases, File.expand_path('../rackspace/databases', __FILE__)
     autoload :DNS, File.expand_path('../rackspace/dns', __FILE__)
     autoload :Identity, File.expand_path('../rackspace/identity', __FILE__)
     autoload :LoadBalancers, File.expand_path('../rackspace/load_balancers', __FILE__)
@@ -50,9 +50,9 @@ module Rackspace
     service(:auto_scale,       'AutoScale')
     service(:block_storage,    'BlockStorage')
     service(:cdn,              'CDN')
-    service(:cdn_v2,           'CDN v2')
+    service(:cdn_v2,           'CDNV2')
     service(:compute,          'Compute')
-    service(:compute_v2,       'Compute v2')
+    service(:compute_v2,       'ComputeV2')
     service(:dns,              'DNS')
     service(:storage,          'Storage')
     service(:load_balancers,   'LoadBalancers')

lib/fog/rackspace/cdn.rb

@@ -196,3 +196,5 @@ def authenticate(options={})
     end
   end
 end
+
+Fog::Rackspace::CDN = Fog::CDN::Rackspace

lib/fog/rackspace/compute.rb

@@ -254,3 +254,5 @@ def authenticate_v1(options)
     end
   end
 end
+
+Fog::Rackspace::Compute = Fog::Compute::Rackspace

lib/fog/rackspace/compute_v2.rb

@@ -251,3 +251,5 @@ def authenticate_v1(options)
     end
   end
 end
+
+Fog::Rackspace::ComputeV2 = Fog::Compute::RackspaceV2

lib/fog/rackspace/dns.rb

@@ -170,3 +170,5 @@ def authenticate(options={})
     end
   end
 end
+
+Fog::Rackspace::DNS = Fog::DNS::Rackspace

lib/fog/rackspace/storage.rb

@@ -463,3 +463,5 @@ def authenticate_v1(options)
     end
   end
 end
+
+Fog::Rackspace::Storage = Fog::Storage::Rackspace