tests: remove remaining and obsolete sav/ files

Signed-off-by: Jean Privat <jean@pryen.org>
tests: add missing test files whose sav files where committed

Signed-off-by: Jean Privat <jean@pryen.org>
tests: activate some exising tests in examples/

Signed-off-by: Jean Privat <jean@pryen.org>
tests: add search_tests.sh to retrieve the original nit files of tests

Signed-off-by: Jean Privat <jean@pryen.org>
tests: add search_tests_git.sh

Signed-off-by: Jean Privat <jean@pryen.org>
tests: add time and timestamp in tests.sh

Signed-off-by: Jean Privat <jean@pryen.org>