Rails.logger should have level specified by config.log_level.

Fix bug when log level of Rails.logger (which was set via config.logger) does not match the    config.log_level.

railties/lib/rails/application/bootstrap.rb

@@ -42,7 +42,6 @@ INFO
           logger = ActiveSupport::Logger.new f
           logger.formatter = config.log_formatter
           logger = ActiveSupport::TaggedLogging.new(logger)
-          logger.level = ActiveSupport::Logger.const_get(config.log_level.to_s.upcase)
           logger
         rescue StandardError
           logger = ActiveSupport::TaggedLogging.new(ActiveSupport::Logger.new(STDERR))
@@ -53,6 +52,8 @@ INFO
           )
           logger
         end
+
+        Rails.logger.level = ActiveSupport::Logger.const_get(config.log_level.to_s.upcase)
       end
 
       # Initialize cache early in the stack so railties can make use of it.

railties/test/application/configuration_test.rb

@@ -671,5 +671,13 @@ module ApplicationTests
         end
       end
     end
+
+    test "config.log_level with custom logger" do
+      make_basic_app do |app|
+        app.config.logger = Logger.new(STDOUT)
+        app.config.log_level = :info
+      end
+      assert_equal Logger::INFO, Rails.logger.level
+    end
   end
 end