Log Message:
Updating devel/p5-MooseX-Types-Structured from 0.19 to 0.20

pkgsrc changes:
- Using now available wanted module type

Upstream changes:
0.20   04 February 2010
        - Add a new Map type. (Ricardo SIGNES)
        - Properly handle Optional[] types within Tuples and Dicts.
          (Florian Ragwitz)