Merge from vendor branch TNF:

Merge from vendor branch TNF:
Initial import of p5-Test-Trap-0.2.1.

This modules is primarily (but not exclusively) for use in test
scripts: A block eval on steroids, configurable and extensible,
but by default trapping (Perl) STDOUT, STDERR, warnings, exceptions,
would-be exit codes, and return values from boxed blocks of test
code.

The values collected by the latest trap can then be queried or
tested through a special trap object.