--- configure.orig	2010-10-10 12:15:41.000000000 -0400
+++ configure	2010-10-10 12:18:12.000000000 -0400
@@ -21139,7 +21139,9 @@ if test "$enable_browser_plugins" = "yes
 $as_echo "#define ENABLE_BROWSER_PLUGINS 1" >>confdefs.h
 
 
+if [ -z "${BROWSER_PLUGIN_DIR}" ]; then
 	BROWSER_PLUGIN_DIR="${BROWSER_PLUGIN_DIR:-"\${libdir}/mozilla/plugins"}"
+fi