Don't create symbolic links pointing to the shared lib.

Index: Makefile
--- Makefile.orig
+++ Makefile
@@ -625,8 +625,6 @@ install_libxxhash: libxxhash
 	@echo Installing libxxhash
 	$(Q)$(MAKE_DIR) $(DESTDIR)$(LIBDIR)
 	$(Q)$(INSTALL_PROGRAM) $(LIBXXH) $(DESTDIR)$(LIBDIR)
-	$(Q)ln -sf $(LIBXXH) $(DESTDIR)$(LIBDIR)/libxxhash.$(SHARED_EXT_MAJOR)
-	$(Q)ln -sf $(LIBXXH) $(DESTDIR)$(LIBDIR)/libxxhash.$(SHARED_EXT)
 
 install_libxxhash.includes:
 	$(Q)$(INSTALL) -d -m 755 $(DESTDIR)$(INCLUDEDIR)   # includes
