util: add optional path auditor argument to canonpath
The canonpath function will default to creating its own path auditor,
but in some cases it will be useful to use a specialized auditor,
e.g., one that wont abort if a path lies within a subrepository.
#!/bin/sh
mkdir t
cd t
hg init
echo a > a
hg ci -Ama -d '1000000000 0'
echo b > b
hg branch b
hg ci -Amb -d '1000000000 0'
hg co -C 0
echo fast-forward
hg merge b
hg ci -Ammerge -d '1000000000 0'
echo bogus fast-forward should fail
hg merge b
echo done