Makefile: use $(datadir)/mconnect for sample config

The sample configuration file is really more like data than a system
wice configuration file deserving a place in /etc. Move to $(datadir).

Makefile.am

@@ -20,7 +20,7 @@ applicationsdir = $(datadir)/applications
 
 applications_DATA = mconnect.desktop
 
-mconnectdatadir = $(sysconfdir)/mconnect
+mconnectdatadir = $(datadir)/mconnect
 
 mconnectdata_DATA = mconnect.conf