It was always taking the first .service.in file to create all .service
files: org.gnome.Shell.CalendarServer.service.in was the only one being
used.
https://bugzilla.gnome.org/show_bug.cgi?id=659194
servicedir = $(datadir)/dbus-1/services
service_DATA = $(service_in_files:.service.in=.service)
-$(service_DATA): $(service_in_files) Makefile
+%.service: %.service.in Makefile
$(AM_V_GEN) \
[ -d $(@D) ] || $(mkdir_p) $(@D) ; \
sed -e "s|\@libexecdir\@|$(libexecdir)|" $< > $@.tmp && mv $@.tmp $@