- update on RESTbuck examples
- new example
- fixed bad typo in WSF_REQUEST
Reverted some changes such as
- http_client_response: keep the headers as a list to handle multiple message-value with same message-name
Fixed simple and simple_file example
Improved HTTP_HEADER
Changed libcurl implementation for http client
- now the header from the context really overwrite any of the session headers
- better design which is more strict, and remove any doubt about context's header usage
Update restbuck_server, remove unused class in inherit.
Update libcurl_http_client_request, to parse context headers before the
execution.
Update wgi_input_stream, commented precondition.
