cmdutil.commit: use relative paths in the error messages
This is more consistent with other error messages and requires
less makeup in test-commit and test-symlink-basic.
#!/bin/shhg initecho This is file a1 > ahg add ahg commit -m "commit #0" -d "1000000 0"touch bhg add brm bhg commit -A -m"comment #1" -d "1000000 0"