Patch from: Jeff Bilyk <jbilyk@alpinelinux.org>

--- smokeping-2.6.1/etc/Makefile.in
+++ smokeping-2.6.1/etc/Makefile.in.new
@@ -207,7 +207,7 @@
 top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
 EXTRA_DIST = basepage.html.dist config.dist smokemail.dist smokeping_secrets.dist tmail.dist 
-etcdir = $(DESTDIR)$(sysconfdir)
+etcdir = $(sysconfdir)
 etc_DATA = $(EXTRA_DIST)
 all: all-am