Make test-remove portable for strange strftime implementations (second try).
I forgot to replace the date output for 'hg log -p', too.
pulling from ../a
searching for changes
warning: pulling from an unrelated repository!
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files (+1 heads)
(run 'hg update' to get a working copy)
changeset: 1:bdcee5d51fa6
tag: tip
user: a
date: Mon Jan 12 13:46:40 1970 +0000
summary: a
changeset: 0:f155ba1aa5ba
user: b
date: Mon Jan 12 13:46:40 1970 +0000
summary: b