Request profiler: use actual script path and line numbers for backtraces.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@8474 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/lib/action_controller/request_profiler.rb

@@ -13,7 +13,7 @@ def self.benchmark(n, script)
 
       def initialize(script_path)
         @quiet = false
-        define_run_method(File.read(script_path))
+        define_run_method(script_path)
         reset!
       end
 
@@ -38,8 +38,9 @@ def say(message)
       end
 
       private
-        def define_run_method(script)
-          instance_eval "def run; #{script}; end", __FILE__, __LINE__
+        def define_run_method(script_path)
+          script = File.read(script_path)
+          instance_eval "def run; #{script}; end", script_path, 1
         end
     end