keys.new-keeper: Don't try to create $SAFE/keys.keeper if it exists.

It's pointless and you get an error.

diff --git a/keys.new-keeper b/keys.new-keeper
index e1906eb2f51281b268a95c10fd3798e5977c3ef2..69b18a056b7db81741def70c682a3af5a4106342 100755 (executable)
--- a/keys.new-keeper
+++ b/keys.new-keeper
@@ -73,7 +73,7 @@ esac
 
 ## Generate the private keys, one per file, and compute the public keys.
 mktmp
-mkdir -m700 $SAFE/keys.keeper/
+mkdir -m700 -p $SAFE/keys.keeper/
 cd $SAFE/keys.keeper/
 rm -rf $keeper.new
 mkdir -m700 $keeper.new