convert: look up copies in getchanges instead of getcommit svn: defer path expansion until getchanges to reduce latency, as well as memory usage when converting incrementally.

#!/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