configitems: register 'email.to' and 'patchbomb.to'

hgext/patchbomb.py

@@ -130,6 +130,9 b" configitem('patchbomb', 'publicurl',"
 configitem('patchbomb', 'reply-to',
     default=None,
 )
+configitem('patchbomb', 'to',
+    default=None,
+)
 
 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for
 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should

mercurial/configitems.py

@@ -314,6 +314,9 b" coreconfigitem('email', 'method',"
 coreconfigitem('email', 'reply-to',
     default=None,
 )
+coreconfigitem('email', 'to',
+    default=None,
+)
 coreconfigitem('experimental', 'archivemetatemplate',
     default=dynamicdefault,
 )