This is the test suite for the pxtl package's implementations of PXTL. Change
into this directory and run runtests.py to test the reference and optimised
implementations.

Notes:

  - under Python pre-2.2, the future-feature division test will fail;

  - under Python pre-2.1, the future-feature nested_scopes tests will fail;

  - under Python pre-2.1, some codings tests will fail (as 1.6 and 2.0
    generate different case unicode escapes and the test suite is
    case-sensitive in some places where it doesn't need to be);

  - under Python pre-1.6, literal, character and codings tests will fail due
    to lack of Unicode.

This suite only tests PXTL implementations' output against the specification;
it does not test other features of the pxtl package.
