patchbomb: use email.encoders instead of email.Encoders

No idea when this became a thing, but it exists for me in both 2.7 and 3.6.

Differential Revision: https://phab.mercurial-scm.org/D4222

hgext/patchbomb.py

@@ -73,7 +73,7 b' You can set patchbomb to always ask for '
 '''
 from __future__ import absolute_import
 
-import email as emailmod
+import email.encoders as emailencoders
 import email.generator as emailgen
 import email.mime.base as emimebase
 import email.mime.multipart as emimemultipart
@@ -380,7 +380,7 b' def _getbundlemsgs(repo, sender, bundle,'
     bundlename = '%s.hg' % opts.get(r'bundlename', 'bundle')
     datapart.add_header('Content-Disposition', 'attachment',
                         filename=bundlename)
-    emailmod.Encoders.encode_base64(datapart)
+    emailencoders.encode_base64(datapart)
     msg.attach(datapart)
     msg['Subject'] = mail.headencode(ui, subj, _charsets, opts.get(r'test'))
     return [(msg, subj, None)]