Use the shlib wrapper when running nptest

Since there seems to be no way to avoid linking to libssl and libcrypto,
just wrap the test. This unbreaks "shared" builds when using clang and/or
OS X.

Signed-off-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Ben Laurie <ben@openssl.org>

test/Makefile

diff --git a/test/Makefile b/test/Makefile
index 0ee38bf..c85e8d8 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -173,7 +173,7 @@
 
 test_np: $(NPTEST)$(EXE_EXT)
 	@echo $(START) $@
-	./$(NPTEST)
+	../util/shlib_wrap.sh ./$(NPTEST)
 
 test_evp: $(EVPTEST)$(EXE_EXT) evptests.txt
 	@echo $(START) $@