revlog: don't handle long for revision matching

The underlying C code doesn't support indexing by longs, there are no
legitimate reasons to use a long, and longs should generally be
converted to ints at a higher level by context's constructor.

mercurial/revlog.py

@@ -722,7 +722,7 b' class revlog(object):'
         return self.node(c)
 
     def _match(self, id):
-        if isinstance(id, (long, int)):
+        if isinstance(id, int):
             # rev
             return self.node(id)
         if len(id) == 20: