* lib/webrick/config.rb (WEBrick::Config::HTTP): rename :RequestHander

to :RequestCallback and add new option :ServerAlias.

* lib/webrick/httpserver.rb (WEBrick::HTTPServer#run): use
  :RequestCallback and warn if :RequestHandler is in server's option.

* lib/webrick/httpserver.rb (WEBrick::HTTPServer#run): should print
  error message for WEBrick::HTTPSataus::Error.

* lib/webrick/httpserver.rb (WEBrick::HTTPServer#lookup_server):
  lookup for hostname from :ServerAlias if the req.host is not match
  to :ServerName.

* lib/webrick/httpservlet.rb (WEBrick::HTTPServlet::CGIHandler#do_GET):
  use $?.exitstatus and refine log message.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@5917 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/webrick/httpservlet/cgihandler.rb

@@ -55,7 +55,7 @@ module WEBrick
           end
         ensure
           cgi_in.close
-          status = $? >> 8
+          status = $?.exitstatus
           sleep 0.1 if /mswin/ =~ RUBY_PLATFORM
           data = cgi_out.read
           cgi_out.close(true)
@@ -74,7 +74,7 @@ module WEBrick
         data = "" unless data
         raw_header, body = data.split(/^[\xd\xa]+/on, 2) 
         raise HTTPStatus::InternalServerError,
-          "The server encontered a script error." if body.nil?
+          "Premature end of script headers: #{@script_filename}" if body.nil?
 
         begin
           header = HTTPUtils::parse_header(raw_header)