Simplify some scripts

ssl-opt.sh and compat.sh can now be run from root too
diff --git a/Makefile b/Makefile
index 2f05e12..0c489f8 100644
--- a/Makefile
+++ b/Makefile
@@ -70,8 +70,8 @@
 covtest:
 	$(MAKE) check
 	programs/test/selftest
-	( cd tests && ./compat.sh )
-	( cd tests && ./ssl-opt.sh )
+	tests/compat.sh
+	tests/ssl-opt.sh
 
 lcov:
 	rm -rf Coverage