Log Message:
Update p5-Package-Stash-XS to 0.25.

Changes from previous:
----------------------
0.25  2011-09-06
      - fix compilation on perl 5.8 (RT#70762)

0.24  2011-09-05
      - invalid package names (for instance, Foo:Bar) are not allowed
      - invalid stash entry names (anything containing ::) are not allowed