Log Message:
Update p5-Scope-Guard from version 0.03nb1 to version 0.12.

Pkgsrc changes:
- Use another form of CPAN homepage
- Canonical MASTER_SITES

Upstream changes:
0.12 Fri Mar 26 19:12:11 2010
    - fix link in README (thanks Franck Joncourt)

0.11 Thu Mar 25 22:08:05 2010
    - doc tweak

0.10 Thu Mar 25 20:14:25 2010
    - add guard() and scope_guard() - thanks Tim Bunce