Table names aren't nested: replace / with _ to match the likely table name.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@8158 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

railties/lib/rails_generator/base.rb

@@ -230,6 +230,7 @@ module Rails
           base_name, @class_path, @file_path, @class_nesting, @class_nesting_depth = extract_modules(@name)
           @class_name_without_nesting, @singular_name, @plural_name = inflect_names(base_name)
           @table_name = (!defined?(ActiveRecord::Base) || ActiveRecord::Base.pluralize_table_names) ? plural_name : singular_name
+          @table_name.gsub! '/', '_'
           if @class_nesting.empty?
             @class_name = @class_name_without_nesting
           else