Emacs: use delete-region instead of kill-* functions. This patch eliminates `kill-line' which taints kill-ring, and `kill-entire-line' which is specific for XEmacs.

#!/bin/sh

mkdir t
cd t
hg init
echo a > a
hg add a
hg commit -m "test" -d "1000000 0"
hg verify
hg parents
hg status
hg rollback
hg verify
hg parents
hg status