gnus-group.el (gnus-read-ephemeral-emacs-bug-group): Take an optional quit window...

gnus-group.el (gnus-read-ephemeral-emacs-bug-group): Take an optional quit window configuration.
auth-source.el (epg-context-set-passphrase-callback): Remove duplicate autoload.
nnir.el (nnir-request-article): Allow requesting articles by Message-ID with nnimap.
gnus-sum.el (gnus-refer-article-methods): Allow (nnir) entry to use current server.
auth-source.el: Autoload EPA/EPG functions.
 (auth-source-netrc-use-gpg-tokens): Clarify that it should not be changed when EPA/EPG is not available.
 (auth-source-backend): Rename "arg" member to "data".
 (auth-source-backend-parse, auth-source-plstore-search)
 (auth-source-plstore-create): Use it.