Log Message:
Updated p5-Petal to 2.20.

Changes from previous:
2.20 Thu Aug 25 13:05:00 2011
    - Remove usage of Safe in taint mode to fix compatability with Perl 5.12. \ 
This may break existing
      code and reduces security! But for now it seems better to have at least a \ 
working version. (Damyan Ivanov)
    - Fix code using deprecated UNIVERSAL->import (Stefan Seifert)

2.19 Fri Jun 16 15:22:00 2006
    - alias false: modifier as not: to match TALES spec (Jonathan Vanasco)
    - fix repeat/odd documentation bug and add to cookbook (Jonathan Vanasco)
    - pod typos (sarabob)
    - CACHE_ONLY option (Jonathan Vanasco)
    - Add Digest::MD5 dependency (aaron)
    - Allow passing arguments to coderefs
    - Encoding support for gettext mo/po files (Andrew Rodland)