Have killpidfromfile in software.

stack/erp5.cfg

@@ -133,6 +133,8 @@ parts =
 # fix products path (Zeo needs ERP5 Products to be available for
 # conflict resolution)
   fix-products-paths
+# some additional utils
+  slapos-toolbox
 
 [bt5-repository]
 # Format:
@@ -391,6 +393,16 @@ python = python2.6
 [pysvn-python]
 python = python2.6
 
+[slapos-toolbox]
+recipe = zc.recipe.egg
+python = ${eggs:python}
+eggs =
+  ${lxml-python:egg}
+  slapos.toolbox
+
+scripts =
+  killpidfromfile = slapos.systool:killpidfromfile
+
 [cloudooo]
 recipe = zc.recipe.egg
 python = python2.6