Add back python-2.7 in lamp stack.

It is dummy import for up-to-date software.cfg, but allows to keep retrocompatibility with old software.cfg using python-2.7 in eggs.
python-2.7 should NOT be used in lamp-based profiles.

stack/lamp.cfg

@@ -35,6 +35,9 @@ extends =
   ../component/stunnel/buildout.cfg  
   ../component/pycrypto-python/buildout.cfg
   ../component/mysql-python/buildout.cfg
+  ../component/python-2.7/buildout.cfg
+# python-2.7 component is here only for compatibility with old software.cfg.
+# It is not needed and should not be used in LAMP-based software.cfg
 
 [eggs]
 recipe = zc.recipe.egg