check-code: Add a ``maxerr`` argument to the ``checkfile`` function
check-code.py used to halt after 15 errors. This changeset adds a new
argument to the checkfile function to control this limit.
#!/bin/sh
hg init
touch a
hg add a
hg ci -m "a" -d "1000000 0"
echo 123 > b
hg add b
hg diff --nodates
hg diff --nodates -r tip
echo foo > a
hg diff --nodates
hg diff -r ""
hg diff -r tip -r ""
true