Fix gcl sometimes stripping the new line characters when changing the issue...

Fix gcl sometimes stripping the new line characters when changing the issue description on the server. This change replaces \n with \r\n before giving the description to the editor on Windows (not through cygwin though), and then replaces \r\n with \n when saving it locally or sending it to reitveld.

BUG=95618
Review URL: http://codereview.chromium.org/7875004

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@101863 0039d316-1c4b-4281-b951-d872f2087c98

gcl.py

@@ -1095,7 +1095,12 @@ def CMDchange(args):
                 "---Repository Root: " + change_info.GetLocalRoot() + "\n"
                 "---Paths in this changelist (" + change_info.name + "):\n")
   separator2 = "\n\n---Paths modified but not in any changelist:\n\n"
-  text = (description + separator1 + '\n' +
+  
+  description_to_write = description
+  if sys.platform == 'win32':
+    description_to_write = description.replace('\n', '\r\n')
+  
+  text = (description_to_write + separator1 + '\n' +
           '\n'.join([f[0] + f[1] for f in change_info.GetFiles()]))
 
   if change_info.Exists():
@@ -1136,6 +1141,10 @@ def CMDchange(args):
 
   # Update the CL description if it has changed.
   new_description = split_result[0]
+  
+  if sys.platform == 'win32':
+    new_description = new_description.replace('\r\n', '\n')
+  
   cl_files_text = split_result[1]
   if new_description != description or override_description:
     change_info.description = new_description