Improved error message for extensions overriding commands (with test): - Old text "module foo overrides bar" was misread as overriding module bar. - Only print a single warning line per extension instead of one for each command.

#!/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