Re-add recursive coverage target in src/backend/

This was lost during the recent recursive make change.

Re-add recursive coverage target in src/backend/
e3094fd3 · Peter Eisentraut · b95ea9dd · e3094fd3
Commit e3094fd3 authored 14 years ago by Peter Eisentraut
--- a/src/backend/common.mk
+++ b/src/backend/common.mk
@@ -44,3 +44,5 @@ $(call recurse,clean)
 clean: clean-local
 clean-local:
 	rm -f $(subsysfilename) $(OBJS)
+
+$(call recurse,coverage)