check-code: do not warn on printf \\x or \\[1-9] When there is a double backslash the following char does not have any special meaning. So do not warn on this. Remove the now obsolete no-check-code statement. (It was used wrongly anyway, it skipped checking the entire file.)

.. Common link and substitution definitions.

.. |hg(1)| replace:: **hg**\ (1)
.. _hg(1): hg.1.html
.. |hgrc(5)| replace:: **hgrc**\ (5)
.. _hgrc(5): hgrc.5.html
.. |hgignore(5)| replace:: **hgignore**\ (5)
.. _hgignore(5): hgignore.5.html