[PATCH 1 of 2] pycompat: add HTTPPasswordMgrWithDefaultRealm to Python 3 block

[Gregory Szorc]

# HG changeset patch
# User Gregory Szorc <gregory.szorc at gmail.com>
# Date 1466900526 25200
#      Sat Jun 25 17:22:06 2016 -0700
# Node ID 62d74c821e87033fa5a7058b77f3db13744f309d
# Parent  fbe380dc227a0240939aa5a4941eda70d958ea40
pycompat: add HTTPPasswordMgrWithDefaultRealm to Python 3 block

Looks like we missed this in 800ec7c048b0.

diff --git a/mercurial/pycompat.py b/mercurial/pycompat.py
--- a/mercurial/pycompat.py
+++ b/mercurial/pycompat.py
@@ -101,16 +101,17 @@ except ImportError:
         "FTPHandler",
         "ftpwrapper",
         "HTTPHandler",
         "HTTPSHandler",
         "install_opener",
         "pathname2url",
         "HTTPBasicAuthHandler",
         "HTTPDigestAuthHandler",
+        "HTTPPasswordMgrWithDefaultRealm",
         "ProxyHandler",
         "quote",
         "Request",
         "splitattr",
         "splitpasswd",
         "splitport",
         "splituser",
         "unquote",