remote-helpers: avoid has_key

It is deprecated.

[fc: do the same in remote-bzr]

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

contrib/remote-helpers/git-remote-bzr

@@ -94,7 +94,7 @@ class Marks:
         return self.last_mark
 
     def is_marked(self, rev):
-        return self.marks.has_key(rev)
+        return str(rev) in self.marks
 
     def new_mark(self, rev, mark):
         self.marks[rev] = mark

contrib/remote-helpers/git-remote-hg

@@ -129,7 +129,7 @@ class Marks:
         self.last_mark = mark
 
     def is_marked(self, rev):
-        return self.marks.has_key(str(rev))
+        return str(rev) in self.marks
 
     def get_tip(self, branch):
         return self.tips.get(branch, 0)