[PATCH stable] test for both long and int when looking for revs with isinstance

[Sune Foldager]

# HG changeset patch
# User Sune Foldager <cryo at cyanite.org>
# Date 1337601032 -7200
# Branch stable
# Node ID e93dd7b2a2e86a86a8909614e31b2120d5703c5d
# Parent  0a730d3c5aaefae00239b8472703c884192f31b7
test for both long and int when looking for revs with isinstance

For consistency across the code; most tests did it already.