Renamed WGI_RESPONSE_BUFFER as WGI_RESPONSE to avoid confusion
Removed EWF_HEADER and removed related caller from WGI implementation,
now this is only part of WSF library
Added wgi_version, wgi_implementation and wgi_connector to the WGI_REQUEST interface
to give more information to the user
Added back WGI_CONNECTOR to WGI specification, mainly because of `{WGI_REQUEST}.wgi_connector'
simplified WGI_CONNECTOR to contain for now only `name' and `version'
if the implementation of connector inherit from WGI_CONNECTOR (recommended)
this might gives more access to the user using a reverse assignment for specific needs
(but this usage is not recommended due to portability issue on other connector)
Removed useless connector.ecf since now EWF/WGI library provides the helper classes
renamed ENVIRONMENT_NAMES into META_NAMES
better usage of READABLE_STRING_GENERAL, and other strings
abstract RESPONSE_BUFFER in implementation of EWSGI
for the implementation, inheriting from deferred specification (more to come later)
So this is really more flexible this way, and much easier to write application supporting CGI, FCGI, Nino and so on .. as demonstrated in hello_world
This is a first version, more will come later, mainly migrating from Eiffel Web Reloaded to this Eiffel Web Framework project.
