Replace instances of "(eval-when-compile (autoload ...))"

Replace instances of "(eval-when-compile (autoload ...))"

* lisp/gnus/gnus-art.el (nneething-get-file-name):
Declare rather than autoload.
* lisp/gnus/gnus-async.el (gnus-html-prefetch-images):
Remove pointless autoload.
* lisp/gnus/gnus-sync.el (gnus-group-topic): Autoload at run-time.
(gnus-topic-create-topic, gnus-topic-enter-dribble):
Declare rather than autoload.
* lisp/gnus/mm-archive.el (gnus-recursive-directory-files)
(mailcap-extension-to-mime): Autoload at run-time.
* lisp/gnus/mm-util.el (latin-unity-massage-name)
(latin-unity-maybe-remap, latin-unity-representations-feasible-region)
(latin-unity-representations-present-region):
Declare rather than autoload.
* lisp/gnus/mml-smime.el (epg-make-context)
(epg-passphrase-callback-function): Autoload at run-time.
(epg-context-set-signers, epg-context-result-for)
(epg-new-signature-digest-algorithm)
(epg-verify-result-to-string, epg-list-keys, epg-verify-string)
(epg-sign-string, epg-encrypt-string)
(epg-context-set-passphrase-callback, epg-sub-key-fingerprint)
(epg-configuration, epg-expand-group, epa-select-keys):
Declare rather than autoload.
* lisp/gnus/nnir.el (nnimap-change-group, nnimap-make-thread-query):
Autoload at run-time.
(gnus-group-topic-name, nnimap-buffer, nnimap-command)
(gnus-registry-get-id-key, gnus-registry-action):
Declare rather than autoload.
* lisp/gnus/nnmail.el (mail-send-and-exit): Autoload at run-time.
* lisp/gnus/spam.el (spam-stat-buffer-change-to-non-spam)
(spam-stat-buffer-change-to-spam, spam-stat-buffer-is-non-spam)
(spam-stat-buffer-is-spam, spam-stat-load, spam-stat-save)
(spam-stat-split-fancy): Remove pointless autoloads.
* lisp/net/mairix.el: Load gnus-util when compiling.
(gnus-group-read-ephemeral-group, gnus-summary-toggle-header)
(message-field-value): Declare rather than autoload.
(mairix-gnus-ephemeral-nndoc, mairix-gnus-fetch-field):
Check gnus-alive-p is fbound.
(vm-quit, vm-visit-folder, vm-select-folder-buffer)
(vm-check-for-killed-summary, vm-error-if-folder-empty)
(vm-get-header-contents, vm-select-marked-or-prefixed-messages):
Declare rather than autoload.