removed execute from unittest.
	modified:   test_todo.py
relocated scripts
	new file:   ascgi.py
	new file:   tests/script/test-add.sh
	renamed:    tests/test-help-web.sh -> tests/script/test-help-web.sh
	renamed:    tests/test-help.sh -> tests/script/test-help.sh
	renamed:    tests/test-list-web.sh -> tests/script/test-list-web.sh
relocated tests
	modified:   Makefile
	new file:   tests/__init__.py
	renamed:    test_todo.py -> tests/todo.py