Add a convenient make top level 'test' target

The test does things with privilege on the current system, so it
invokes sudo to run.

Signed-off-by: Andrew G. Morgan <morgan@kernel.org>
diff --git a/Makefile b/Makefile
index ad58c3a..0a31124 100644
--- a/Makefile
+++ b/Makefile
@@ -31,6 +31,9 @@
 	cd .. && ln -s libcap libcap-$(VERSION).$(MINOR) && tar cvf libcap-$(VERSION).$(MINOR).tar libcap-$(VERSION).$(MINOR)/* && rm libcap-$(VERSION).$(MINOR)
 	cd .. && gpg -sba -u E2CCF3F4 libcap-$(VERSION).$(MINOR).tar
 
+test: all
+	cd progs && sudo ./quicktest.sh
+
 tagrelease: distclean
 	@echo "sign the tag twice: older DSA key; and newer RSA kernel.org key"
 	git tag -u D41A6DF2 -s libcap-$(VERSION).$(MINOR)