Add script to list authors

diff --git a/bacula/authors b/bacula/authors
new file mode 100755 (executable)
index 0000000..83228d0
--- /dev/null
+++ b/bacula/authors
@@ -0,0 +1,2 @@
+#!/bin/sh
+git log --format='%aN' Release-5.0.3..Branch-5.1| sort -u