add WEBrick::Config::FileHandler[:AcceptableLanguages].
* lib/webrick/httpservlet/filehandler.rb
(WEBrick::HTTPServlet::FileHandler#set_filename): search files
having suffix of language-name which Accept-Language header field
includes if :AcceptableLanguages options is present.
* lib/webrick/httpservlet/filehandler.rb
(WEBrick::HTTPServlet::FileHandler#get_servlet): new method to
search servlet correspond to the suffix of filename.
* lib/webrick/httprequest.rb: add attributes access methods: accept,
accept_charset, accept_encoding, accept_language, content_length
and content_type.
* lib/webrick/httpresponse.rb: add attribute access methods:
content_length, content_length=, content_type and content_type=.
* lib/webrick/httputils.rb (WEBrick::HTTPUtils.mime_types):
use the second suffix to detect media type. (the first suffix
may be a language name.)
* lib/webrick/httputils.rb (WEBrick::HTTPUtils.parse_qvalues):
add method to parse Accept header field. it returns an Array of
values sorted by the qvalues.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@7033 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
