tests/test-rebuildstate.out

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.

adding bar
adding foo
% state dump after
n 666         -1 bar
n 666         -1 foo
% status
! bar
? baz
C foo