Add a temp-install prerequisite to top-level "check-tests".

The target failed, tested $PATH binaries, or tested a stale temporary
installation.  Commit c66b438 missed
this.  Back-patch to 9.5 (all supported versions).

Author: nmisch

GNUmakefile.in

@@ -63,6 +63,7 @@ distclean maintainer-clean:
 	@rm -rf autom4te.cache/
 	rm -f config.cache config.log config.status GNUmakefile
 
+check-tests: | temp-install
 check check-tests installcheck installcheck-parallel installcheck-tests: CHECKPREP_TOP=src/test/regress
 check check-tests installcheck installcheck-parallel installcheck-tests: submake-generated-headers
 	$(MAKE) -C src/test/regress $@