Meta/ML: make the 'master' branch customizable

diff --git a/ML b/ML
index 6d2b52fc4235a241f34301a95bfc27f5257e4bf9..4b66826da7282aca88d9f6887a50d8cfd9277557 100755 (executable)
--- a/ML
+++ b/ML
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Merge later...
 
-MASTER=master
+: ${MASTER:=master}
 
 : "${target:=maint}" "${here:=$MASTER}"