Hi Per,

I've modified testing.scm to fully support Guile 2.  It passes all tests
of srfi-64-test.scm, except for the two expected failures.  (What's the
story with those expected failures, btw?  Do they pass on any system?)

A few notes:

* Guile 2's syntax-case macro system does not tolerate bare symbols in
  the output of macro transformers, but the syntax-case macros in
  testing.scm generate bare symbols.  I fixed this by changing several
  instances of 'quote to (syntax quote), and also by using
  'datum->syntax' in Guile-2's implementation of '%test-source-line2'.

* I noticed that three of the implementations of '%test-error' were
  incorrect in the following respect: they should return #f if no error
  occurs, but instead they would return the result of evaluating the
  test expression.  To fix this, I added '#f' after 'expr' in several
  places.

* In 'test-read-eval-string', you call 'eval' with only one argument,
  but R5RS, R6RS, and R7RS all specify that 'eval' takes two arguments.
  Guile's 'eval' requires two arguments.

Anyway, I've attached a patch with my changes to testing.scm.

    Regards,
      Mark