Added public files
Roughly added all public files. Probably missed some, though.
diff --git a/doc/master/external_master_reload b/doc/master/external_master_reload
new file mode 100644
index 0000000..57913f0
--- /dev/null
+++ b/doc/master/external_master_reload
@@ -0,0 +1,10 @@
+SYNOPSIS
+ void external_master_reload()
+
+DESCRIPTION
+ Master was reloaded on external request by SIGUSR1.
+ It will be called after inaugurate_master() of course.
+ If you plan to do additional magic here, you're welcome.
+
+SEE ALSO
+ inaugurate_master(M)