setuptools: added --single-version-externally-managed and --root=$root to SETUPTOOLS packages

as karasz suggested, to avoid shared files

python/setuptools/parse-config

@@ -2,7 +2,7 @@
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 #
 # Filename: package/.../setuptools/parse-config
-# Copyright (C) 2006 The OpenSDE Project
+# Copyright (C) 2006 - 2009 The OpenSDE Project
 #
 # More information can be found in the files COPYING and README.
 #
@@ -19,4 +19,7 @@ if hasflag SETUPTOOLS; then
 
 	var_append flistdel "|" "${eazyinstall_pth#/}"
 	unset eazyinstall_pth
+
+	var_append pyconfopt ' ' '--single-version-externally-managed'
+	var_append pyconfopt ' ' "--root=$root/"
 fi