test-merge-tools: windows fixes
- /bin/cat does not exist, expect 'cat'
- non-interactive mode is not correctly detected in pysh, force it
% Without -v
access log created - .hg/hgrc respected
% errors
% With -v
listening at http://localhost/ (bound to 127.0.0.1)
% errors
% With --prefix foo
listening at http://localhost/foo/ (bound to 127.0.0.1)
% errors
% With --prefix /foo
listening at http://localhost/foo/ (bound to 127.0.0.1)
% errors
% With --prefix foo/
listening at http://localhost/foo/ (bound to 127.0.0.1)
% errors
% With --prefix /foo/
listening at http://localhost/foo/ (bound to 127.0.0.1)
% errors