Simplify the recipe commands interface: * The implementation of a command is now located using a pseudo-protocol for namespace URIs. * Commands are simply module-level functions instead of components. * Remove dependency of the recipe/slave code on the Trac component architecture.

old mode 100644
new mode 100755
--- a/setup.py
+++ b/setup.py
@@ -1,3 +1,5 @@
+#!/usr/bin/env python
+
 from distutils.core import setup, Command
 from bitten.distutils.testrunner import unittest