Fix : Some indirect constructs could be incorrectly reported when several modules were used in the same scope. This caused t/30-scope.t to fail randomly.
Tst : Threads tests are now only run on perl 5.13.4 and higher. They could segfault randomly because of what seems to be an internal bug of Perl, which has been addressed in 5.13.4. There is also an environment variable that allows you to forcefully run those tests, but it should be set only for author testing and not for end users.