from perl 5.6.1's Cwd.pm on every system() call.
r=mattyt, justdave
# Some environment variables are not taint safe
delete @::ENV{'PATH', 'IFS', 'CDPATH', 'ENV', 'BASH_ENV'};
+# Cwd.pm in perl 5.6.1 gives a warning if $::ENV{'PATH'} isn't defined
+# Set this to '' so that we don't get warnings cluttering the logs on every
+# system call
+$::ENV{'PATH'} = '';
+
# Contains the version string for the current running Bugzilla.
$::param{'version'} = '2.15';