Add google-endpoints to third_party/.

third_party/google-endpoints/enum34-1.1.6.dist-info/DESCRIPTION.rst

+enum --- support for enumerations
+========================================
+
+An enumeration is a set of symbolic names (members) bound to unique, constant
+values.  Within an enumeration, the members can be compared by identity, and
+the enumeration itself can be iterated over.
+
+    from enum import Enum
+
+    class Fruit(Enum):
+        apple = 1
+        banana = 2
+        orange = 3
+
+    list(Fruit)
+    # [<Fruit.apple: 1>, <Fruit.banana: 2>, <Fruit.orange: 3>]
+
+    len(Fruit)
+    # 3
+
+    Fruit.banana
+    # <Fruit.banana: 2>
+
+    Fruit['banana']
+    # <Fruit.banana: 2>
+
+    Fruit(2)
+    # <Fruit.banana: 2>
+
+    Fruit.banana is Fruit['banana'] is Fruit(2)
+    # True
+
+    Fruit.banana.name
+    # 'banana'
+
+    Fruit.banana.value
+    # 2
+
+Repository and Issue Tracker at https://bitbucket.org/stoneleaf/enum34.
+
+