Updating devel/p5-Path-Class from 0.17 to 0.18.

pkgsrc changes:
- Adjusting HOMEPAGE URI and dependencies

Upstream changes:
0.18 - Sun Dec 20 10:11:02 CST 2009
- Similar to the next() bug for files/directories named "0" or "0.0"
  in the previous release, the children() and recurse() methods have
  now been fixed in the same way. [spotted by ARTHAS, MSISK]

(sno)