Fix two common points of confusion:

- show "push upstream" instructions after arc amend
	- parse 'diffcamp revision'

Summary:

Test Plan:

Reviewers:

CC:

src/differential/commitmessage/ArcanistDifferentialCommitMessage.php

@@ -30,8 +30,9 @@ class ArcanistDifferentialCommitMessage {
     $obj = new ArcanistDifferentialCommitMessage();
     $obj->rawCorpus = $corpus;
 
+    // TODO: Remove "Diffcamp" backward compatibility.
     $match = null;
-    if (preg_match('/^Differential Revision:\s*D?(\d+)/m', $corpus, $match)) {
+    if (preg_match('/^(?:Differential|DiffCamp) Revision:\s*D?(\d+)/im', $corpus, $match)) {
       $obj->revisionID = (int)$match[1];
     }
 

src/workflow/amend/ArcanistAmendWorkflow.php

@@ -126,6 +126,10 @@ EOTEXT
       }
     }
 
+    echo phutil_console_wrap(
+      "You may now push this commit upstream, as appropriate (e.g. with ".
+      "'git push', or 'git svn dcommit', or by printing and faxing it).\n");
+
     return 0;
   }