Thomas Arendsen Hein <thomas@intevation.de> [Thu, 21 Jun 2007 10:00:59 +0200] rev 4661
Backed out changeset cfa477946181824f4c769580ebf59710090ba08a
Only printenv was changed, not the actual execution of hooks.
And not setting an empty value might cause problems on platforms
which can't always remove variables from the environment.