Simplify some scripts

ssl-opt.sh and compat.sh can now be run from root too
diff --git a/CMakeLists.txt b/CMakeLists.txt
index c0d03f6..610f079 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -84,8 +84,8 @@
         ADD_CUSTOM_TARGET(covtest
             COMMAND make test
             COMMAND programs/test/selftest
-            COMMAND cd tests && ./compat.sh
-            COMMAND cd tests && ./ssl-opt.sh
+            COMMAND tests/compat.sh
+            COMMAND tests/ssl-opt.sh
         )
 
         ADD_CUSTOM_TARGET(lcov