Include kerberos libraries (if used) when linking test apps: some need it.

test/Makefile

@@ -309,9 +309,9 @@ BUILD_CMD=shlib_target=; if [ -n "$(SHARED_LIBS)" ]; then \
 		shlib_target="$(SHLIB_TARGET)"; \
 	fi; \
 	if [ "$${shlib_target}" = "hpux-shared" -o "$${shlib_target}" = "darwin-shared" ] ; then \
-		LIBRARIES="$(DLIBSSL) $(DLIBCRYPTO)"; \
+		LIBRARIES="$(DLIBSSL) $(DLIBCRYPTO) $(LIBKRB5)"; \
 	else \
-		LIBRARIES="$(LIBSSL) $(LIBCRYPTO)"; \
+		LIBRARIES="$(LIBSSL) $(LIBCRYPTO) $(LIBKRB5)"; \
 	fi; \
 	$(MAKE) -f $(TOP)/Makefile.shared -e \
 		APPNAME=$$target$(EXE_EXT) OBJECTS="$$target.o" \