Fix a bunch of custom types (thank you cus-test.el)

* lisp/bookmark.el (bookmark-search-delay):
* lisp/cus-start.el (vertical-centering-font-regexp):
* lisp/ps-mule.el (ps-mule-font-info-database-default):
* lisp/ps-print.el (ps-default-fg, ps-default-bg):
* lisp/type-break.el (type-break-good-break-interval):
* lisp/whitespace.el (whitespace-indentation-regexp)
(whitespace-space-after-tab-regexp):
* lisp/emacs-lisp/testcover.el (testcover-1value-functions)
(testcover-noreturn-functions, testcover-progn-functions)
(testcover-prog1-functions):
* lisp/emulation/viper-init.el (viper-emacs-state-cursor-color):
* lisp/erc/erc-desktop-notifications.el (erc-notifications-icon):
* lisp/eshell/em-glob.el (eshell-glob-translate-alist):
* lisp/gnus/gnus-art.el (gnus-article-date-headers, gnus-blocked-images):
* lisp/gnus/gnus-async.el (gnus-async-post-fetch-function):
* lisp/gnus/gnus-gravatar.el (gnus-gravatar-size, gnus-gravatar-properties):
* lisp/gnus/gnus-html.el (gnus-html-image-cache-ttl):
* lisp/gnus/gnus-notifications.el (gnus-notifications-timeout):
* lisp/gnus/gnus-picon.el (gnus-picon-properties):
* lisp/gnus/gnus-util.el (gnus-completion-styles):
* lisp/gnus/gnus.el (gnus-other-frame-resume-function):
* lisp/gnus/message.el (message-user-organization-file)
(message-cite-reply-position):
* lisp/gnus/nnir.el (nnir-summary-line-format)
(nnir-retrieve-headers-override-function):
* lisp/gnus/shr-color.el (shr-color-visible-luminance-min):
* lisp/gnus/shr.el (shr-blocked-images):
* lisp/gnus/spam-report.el (spam-report-resend-to):
* lisp/gnus/spam.el (spam-summary-exit-behavior):
* lisp/mh-e/mh-e.el (mh-sortm-args, mh-default-folder-for-message-function):
* lisp/play/tetris.el (tetris-tty-colors):
* lisp/progmodes/cpp.el (cpp-face-default-list):
* lisp/progmodes/flymake.el (flymake-allowed-file-name-masks):
* lisp/progmodes/idlw-help.el (idlwave-help-browser-generic-program)
(idlwave-help-browser-generic-args):
* lisp/progmodes/make-mode.el (makefile-special-targets-list):
* lisp/progmodes/python.el (python-shell-virtualenv-path):
* lisp/progmodes/verilog-mode.el (verilog-active-low-regexp)
(verilog-auto-input-ignore-regexp, verilog-auto-inout-ignore-regexp)
(verilog-auto-output-ignore-regexp, verilog-auto-tieoff-ignore-regexp)
(verilog-auto-unused-ignore-regexp, verilog-typedef-regexp):
* lisp/textmodes/reftex-vars.el (reftex-format-label-function):
* lisp/textmodes/remember.el (remember-diary-file):
Fix custom types.

* lisp/cedet/semantic/db-find.el (semanticdb-find-throttle-custom-list):
Fix value.

* lisp/gnus/gnus-salt.el (gnus-selected-tree-face): Fix default.

lisp/progmodes/verilog-mode.el

@@ -964,7 +964,7 @@ See also `verilog-library-flags', `verilog-library-directories'."
 This is used for AUTORESET and AUTOTIEOFF.  For proper behavior,
 you will probably also need `verilog-auto-reset-widths' set."
   :group 'verilog-mode-auto
-  :type 'string)
+  :type '(choice (const nil) regexp))
 (put 'verilog-active-low-regexp 'safe-local-variable 'stringp)
 
 (defcustom verilog-auto-sense-include-inputs nil
@@ -1138,21 +1138,21 @@ won't merge conflict."
   "If set, when creating AUTOINPUT list, ignore signals matching this regexp.
 See the \\[verilog-faq] for examples on using this."
   :group 'verilog-mode-auto
-  :type 'string)
+  :type '(choice (const nil) regexp))
 (put 'verilog-auto-input-ignore-regexp 'safe-local-variable 'stringp)
 
 (defcustom verilog-auto-inout-ignore-regexp nil
   "If set, when creating AUTOINOUT list, ignore signals matching this regexp.
 See the \\[verilog-faq] for examples on using this."
   :group 'verilog-mode-auto
-  :type 'string)
+  :type '(choice (const nil) regexp))
 (put 'verilog-auto-inout-ignore-regexp 'safe-local-variable 'stringp)
 
 (defcustom verilog-auto-output-ignore-regexp nil
   "If set, when creating AUTOOUTPUT list, ignore signals matching this regexp.
 See the \\[verilog-faq] for examples on using this."
   :group 'verilog-mode-auto
-  :type 'string)
+  :type '(choice (const nil) regexp))
 (put 'verilog-auto-output-ignore-regexp 'safe-local-variable 'stringp)
 
 (defcustom verilog-auto-template-warn-unused nil
@@ -1176,21 +1176,21 @@ assignment, else the data type for variable creation."
   "If set, when creating AUTOTIEOFF list, ignore signals matching this regexp.
 See the \\[verilog-faq] for examples on using this."
   :group 'verilog-mode-auto
-  :type 'string)
+  :type '(choice (const nil) regexp))
 (put 'verilog-auto-tieoff-ignore-regexp 'safe-local-variable 'stringp)
 
 (defcustom verilog-auto-unused-ignore-regexp nil
   "If set, when creating AUTOUNUSED list, ignore signals matching this regexp.
 See the \\[verilog-faq] for examples on using this."
   :group 'verilog-mode-auto
-  :type 'string)
+  :type '(choice (const nil) regexp))
 (put 'verilog-auto-unused-ignore-regexp 'safe-local-variable 'stringp)
 
 (defcustom verilog-typedef-regexp nil
   "If non-nil, regular expression that matches Verilog-2001 typedef names.
 For example, \"_t$\" matches typedefs named with _t, as in the C language."
   :group 'verilog-mode-auto
-  :type 'string)
+  :type '(choice (const nil) regexp))
 (put 'verilog-typedef-regexp 'safe-local-variable 'stringp)
 
 (defcustom verilog-mode-hook   'verilog-set-compile-command