Evaluate ${localstatedir} later.

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@2154 d4fa192b-c00b-0410-8231-f00ffab90ce4

configure.ac

@@ -116,7 +116,7 @@ AC_CHECK_FUNCS([epoll_ctl])
 AC_CHECK_FUNCS([poll])
 
 # Run-time directory
-VARNISH_STATE_DIR="${localstatedir}/varnish"
+VARNISH_STATE_DIR='${localstatedir}/varnish'
 AC_SUBST(VARNISH_STATE_DIR)
 
 # Now that we're done using the compiler to look for functions and