bump submodule - merchant - Merchant backend to process payments, run by merchants

commit 6f74dcac0da8ec2dc30b51a70c4f02dfa1e04cc7
parent bd9eed9ddec559375ab2b54af3e25c0189efd5bf
Author: Christian Grothoff <christian@grothoff.org>
Date:   Tue, 31 May 2016 20:48:34 +0200

bump submodule

	merchant Merchant backend to process payments, run by merchants
	Log \| Files \| Refs \| Submodules \| README \| LICENSE