Misc small custom fixes

Misc small custom fixes

The value of defcustom's const should not be quoted!

* lisp/desktop.el (desktop-restore-in-current-display):
* lisp/newcomment.el (comment-empty-lines):
* lisp/progmodes/idlwave.el (idlwave-scan-all-buffers-for-routine-info)
(idlwave-pad-keyword):
* lisp/progmodes/tcl.el (tcl-tab-always-indent):
* lisp/textmodes/reftex-vars.el (reftex-index-default-tag):
* lisp/elec-pair.el (electric-pair-skip-whitespace):
* lisp/progmodes/cfengine.el (cfengine-cf-promises):
* lisp/cedet/ede/linux.el (project-linux-build-directory-default)
(project-linux-architecture-default):
* lisp/erc/erc-button.el (erc-button-alist):
* lisp/gnus/auth-source.el (auth-sources):
* lisp/gnus/nnmairix.el (nnmairix-propagate-marks-upon-close):
* lisp/url/url-history.el (url-history-track):
* lisp/url/url-vars.el (url-honor-refresh-requests):
Fix custom types.

* lisp/net/tls.el (tls-certtool-program): Fix default value.