File sweep-configure-fix.diff of Package sweep

--- configure.ac.orig	2008-04-11 16:08:56.000000000 +0200
+++ configure.ac	2014-10-26 08:13:19.264065426 +0100
@@ -390,7 +390,7 @@
 if test "x${prefix}" = xNONE; then
   sweep_plugin_dir="${ac_default_prefix}/lib/${PACKAGE}"
 else
-  sweep_plugin_dir="${prefix}/lib/${PACKAGE}"
+  sweep_plugin_dir="${libdir}/${PACKAGE}"
 fi
 AC_DEFINE_UNQUOTED([PACKAGE_PLUGIN_DIR], "$sweep_plugin_dir", [Define the PACKAGE_PLUGIN_DIR.])