tests: test-check-code-hg.t works for all files to check
with xargs, backslashes are eaten up. Convert them to slashes therefore.
This is only a problem with ls (on windows). hg manifest returns slashes.
The pipe char is moved before the line end for telling check-code.py that sed
does not modify the output.
{header}
{annotate%annotateline}
{footer}