Add scm.*.GetEmail() to retrieve the user email. Use this email for try job emails.

trychange.py

Index: trychange.py
diff --git a/trychange.py b/trychange.py
index 65e935a08a9b55c8c3ad62f3b075fa6bd0d03616..7191faa06a7e742d5d181184a67162bebb298668 100755
--- a/trychange.py
+++ b/trychange.py
@@ -175,6 +175,8 @@ class SVN(SCM):
       self.options.diff = self.GenerateDiff(adjusted_paths, root=source_root)
       self.change_info = gcl.LoadChangelistInfoForMultiple(self.options.name,
           gcl.GetRepositoryRoot(), True, True)
+    if not self.options.email:
+      self.options.email = scm.SVN.GetEmail(gcl.GetRepositoryRoot())
 
 
 class GIT(SCM):
@@ -191,10 +193,6 @@ class GIT(SCM):
         diff[i] = '--- %s' % diff[i+1][4:]
     return ''.join(diff)
 
-  def GetEmail(self):
-    # TODO: check for errors here?
-    return upload.RunShell(['git', 'config', 'user.email']).strip()
-
   def GetFileNames(self):
     """Return the list of files in the diff."""
     return self.options.files
@@ -222,7 +220,7 @@ class GIT(SCM):
     if not self.options.name:
       self.options.name = self.GetPatchName()
     if not self.options.email:
-      self.options.email = self.GetEmail()
+      self.options.email = scm.GIT.GetEmail('.')
 
 
 def _ParseSendChangeOptions(options):