Revert "Add missing PREFIX to a few lines of the Makefile. (Thomas Keller)"

This reverts commit 65c12dffec.

Turns out we can't use PREFIX for files in /etc, because that would tend to
put them in /usr/etc, which is bad..

Makefile.PL

@@ -48,9 +48,9 @@ extra_clean:
 	$(MAKE) -C po clean
 
 extra_install:
-	install -d $(DESTDIR)$(PREFIX)/etc/ikiwiki
-	install -m 0644 wikilist $(DESTDIR)$(PREFIX)/etc/ikiwiki
-	install -m 0644 auto.setup $(DESTDIR)$(PREFIX)/etc/ikiwiki
+	install -d $(DESTDIR)/etc/ikiwiki
+	install -m 0644 wikilist $(DESTDIR)/etc/ikiwiki
+	install -m 0644 auto.setup $(DESTDIR)/etc/ikiwiki
 
 	install -d $(DESTDIR)$(PREFIX)/share/ikiwiki
 	for dir in `cd underlays && find . -follow -type d ! -regex '.*\.svn.*'`; do \

debian/changelog

@@ -1,7 +1,6 @@
 ikiwiki (2.62) UNRELEASED; urgency=low
 
   * Avoid using cp -a (again). (HenrikBrixAndersen)
-  * Add missing PREFIX to a few lines of the Makefile. (Thomas Keller)
   * Avoid using hostname -f for portability to eg, OS X, use Net::Domain
     instead, and prompt if it fails.