add STOP-WANNA-BUILD emergency stop option

diff --git a/bin/wanna-build b/bin/wanna-build
index 7c6e9b26ab864e9dccc138278cbf93ba5c93bbb7..8065a2ced78debbcd9df4ca0be1c90f5d93cdf5a 100755 (executable)
--- a/bin/wanna-build
+++ b/bin/wanna-build
@@ -23,6 +23,8 @@ use strict;
 use warnings;
 use 5.010;
 
+die "wanna-build disabled" if -f "/org/wanna-build/NO-WANNA-BUILD";
+
 package conf;
 
 use vars qw< $basedir $dbbase $transactlog $mailprog $buildd_domain >;