…eplaced `Net::HTTP` to make it possible to marshal objects with these constants assigned to properties. It looks like `Marshal` doesn't use const_get or consttants methods.
…return same values as original `Net::HTTP`
… true if constant is defined on the original Net::HTTP. This is only for Ruby 1.8 since Ruby 1.9 by default looks for a const in ancestors.
…ebMock with WebMock.enable! and WebMock.disable!
…moving all adapters from the registry
…WebMock.disable!(:except => [:net_http])
…plex and didn't bring too much value.
…rwise curb doesn't like them
…ses many class instance variables, so I didn't use inheritance and const replacement in this case)