tests/test-issue322.out

run-tests.py: tell coverage.py to ignore errors

Otherwise there'll be some IOErrors when it tries to open python
files created during the execution of e.g. test-hook.

% file replaced with directory
adding a
% should fail - would corrupt dirstate
abort: file named 'a' already in dirstate
% directory replaced with file
adding a/a
% should fail - would corrupt dirstate
abort: directory named 'a' already in dirstate
% directory replaced with file
adding b/c/d
% should fail - would corrupt dirstate
abort: directory named 'b' already in dirstate