Update from version 0.14nb1 to 0.16.

Upstream changes:

0.16 Mon 17 Nov 2008
    - fix up branches test which did not handle the errors thrown by
      changes from the last release (RT #40948)
    - fix up error message for "any of" (RT #40972)

0.15 Wed 12 Nov 2008
    - when use_ext is true, we will check to see if there are no supported
      modules for a particular file. instead of the file being skipped, an
      error will be thrown (RT #38927).
    - also, when use_ext is true, a fatal error will be thrown if there are
      no loaders available that understand the file extension.
    - officially support multiple loaders per extension
    - add a Config::Any::Base for all loaders to inherit from, plus add
      a new dependency mechanism: requires_any_of() and requires_all_of().
    - filter out loaders that don't inherit from Config::Any::Base (RT #40830)

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