Changes in 2.1.0

The program/project renamed from 'http-access2' to 'httpclient'. Now program name, gem name, and module namespace are the same: 'httpclient'. There's compatibility layer included so existing programs for http-access2 which uses HTTPAccess2::Client should work with httpclient/2.1.0 correctly.

Feature changes from http-access/2.0.9 to httpclient/2.1.0 are follows.

• install.rb did not install cacerts.p7s. Thanks to knu.
• now HTTPClient loads http_proxy/HTTP_PROXY and no_proxy/NO_PROXY environment variable at initialization time. bear in mind that it doesn't load http_proxy/HTTP_PROXY when a library is considered to be running under CGI environment (checked by ENVREQUEST_METHOD existence.) cgi_http_proxy/CGI_HTTP_PROXY is loaded instead.