[Findit] Add timestamp of CL commit and fix two bugs.

tools/findit/findit_for_crash.py

 # Copyright (c) 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import os
 from threading import Lock
 
 import blame
 from common import utils
 import component_dictionary
@@ skipping 477 matching lines @@
       if cl == cl_combined:
         found_match = match_combined
         break
 
     # If current match is not already in, add it to the list of matches.
     if not found_match:
       combined_matches.append((stack_index, cl, match))
       continue
 
     # Combine the reason if the current match is already in there.
-    found_match.reason += match.reason
+    found_match.reason += '\n' + match.reason
     if match.min_distance < found_match.min_distance:
       found_match.min_distance = match.min_distance
       found_match.min_distance_info = match.min_distance_info
 
   for stack_index, cl, match in combined_matches:
     if match.min_distance_info:
       file_name, min_crashed_line, min_changed_line = match.min_distance_info
-      match.reason += \
-          ('\nMinimum distance from crash line to modified line: %d. '
-           '(file: %s, crashed on: %d, modified: %d).\n' %
-           (match.min_distance, file_name, min_crashed_line, min_changed_line))
+      match.reason = match.reason.strip()
+      match.reason += (
+          '\nMinimum distance from crash line to modified line: %d. '
+          '(file: %s, crashed on: %d, modified: %d).' %
+          (match.min_distance, file_name, min_crashed_line, min_changed_line))
 
   return combined_matches
 
 
 def FilterAndGenerateReasonForMatches(result):
   """A wrapper function.
 
   It generates reasons for the matches and returns string representation
   of filtered results.
 
@@ skipping 134 matching lines @@
         'The result is the blame information.')
 
   # When findit could not find any CL that changes file in stacktrace or if
   # if cannot get any blame information, return a message saying that no
   # results are available.
   else:
     return_message = ('Findit could not find any suspected CLs.')
 
   return (return_message, result)