Added remote destination branch information when uploading.

Several times one have done an upload only to later notice in gerrit
that the upload was done to the wrong branch as the git has not yet
been branched for the current git. This change will make repo print
what the destination branch is when asking the user if she wants to
go through with the upload.

Change-Id: Ia9c3a92a6a04c022edfebf4f8d651ac062bb1f3b

subcmds/upload.py

@@ -162,7 +162,7 @@ Gerrit Code Review:  http://code.google.com/p/gerrit/
       date = branch.date
       list = branch.commits
 
-      print 'Upload project %s/:' % project.relpath
+      print 'Upload project %s/ to remote branch %s:' % (project.relpath, project.revisionExpr)
       print '  branch %s (%2d commit%s, %s):' % (
                     name,
                     len(list),
@@ -202,11 +202,12 @@ Gerrit Code Review:  http://code.google.com/p/gerrit/
 
         if b:
           script.append('#')
-        script.append('#  branch %s (%2d commit%s, %s):' % (
+        script.append('#  branch %s (%2d commit%s, %s) to remote branch %s:' % (
                       name,
                       len(list),
                       len(list) != 1 and 's' or '',
-                      date))
+                      date,
+                      project.revisionExpr))
         for commit in list:
           script.append('#         %s' % commit)
         b[name] = branch