Escape specials in link descriptions.
* lisp/muse-publish.el (muse-publish-escape-specials-in-string): New
function that escapes special characters in the given string according
to the current publishing style.
(muse-publish-url): Use the above function to escape the description
part of extended links.
(muse-publish-prepare-url): Don't make string read-only; it does
nothing.
* lisp/muse-wiki.el (muse-wiki-transform-interwiki)
(muse-wiki-transform-wikiword): Don't make string read-only.
git-archimport-id: mwolson@gnu.org--2005/muse--main--1.0--patch-116