Updating www/p5-URI-Escape-XS from 0.07nb1 to 0.08

Upstream changes:
$Revision: 0.8 $ $Date: 2010/07/16 07:52:31 $
! XS.xs
  The fix in RT#39135 did not address %XX
  reported by @kazuho via twitter DM

(sno)