Merged from mwolson@gnu.org--2005 (patch 333, 337, 345-346, 349)
Patches applied:
* john@wjsullivan.net--2006/muse--johnsu01--0--patch-1
Updated copyright year. Added notes about using the .muse file extension to the Projects node.
* mwolson@gnu.org--2005/muse--main--1.0--patch-333
muse-publish: Prevent error when return value is not a string.
* mwolson@gnu.org--2005/muse--main--1.0--patch-337
muse-wiki: Allow interwiki links to use different base URLs.
* mwolson@gnu.org--2005/muse--main--1.0--patch-345
Fix backtrace on project names.
* mwolson@gnu.org--2005/muse--main--1.0--patch-346
Fix #4973: muse-project-ignore-regexp too aggressive
git-archimport-id: mwolson@gnu.org--2005/muse--rel--3.02--patch-50