[MERGE] deprecate VersionedFile.get_sha1

[John Arbash Meinel]

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Robert Collins wrote:
| We have a plural version, so the single can go. Bye Bye method.
|
| -Rob
|

- -
+        # Deprecasted single-version API.
+        self.assertEqual(
+            '3f786850e387550fdab836ed7e6dc881de23001b',
+            self.applyDeprecated(one_four, vf.get_sha1, 'a'))
+        self.assertEqual(
+            '3f786850e387550fdab836ed7e6dc881de23001b',
+            self.applyDeprecated(one_four, vf.get_sha1, 'b'))
+        self.assertEqual(
+            '86f7e437faa5a7fce15d1ddcb9eaeaea377667b8',
+            self.applyDeprecated(one_four, vf.get_sha1, 'c'))
~         self.assertEqual(['3f786850e387550fdab836ed7e6dc881de23001b',
~                           '86f7e437faa5a7fce15d1ddcb9eaeaea377667b8',
~                           '3f786850e387550fdab836ed7e6dc881de23001b'],

^- This seems like it should be a separate test, but otherwise seems fine. If
you feel it is too much for a deprecated api, that is fine, too.

BB:tweak

John
=:->
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