tests/check-gendoc

hook: add support for disabling the shell to native command translation

I think having it on by default is the right thing to do, but this is an escape
hatch if someone has a command that shouldn't be mangled.  The inspiration is
the priority prefix.  The translation does nothing on non Windows platforms, so
the default value is selected to avoid printing a useless note by default.

#!/bin/sh
HGENCODING=UTF-8
export HGENCODING

echo ".. -*- coding: utf-8 -*-" > gendoc.txt
echo "" >> gendoc.txt
LANGUAGE=$1 python "$TESTDIR/../doc/gendoc.py" >> gendoc.txt 2> /dev/null || exit

echo "checking for parse errors"
python "$TESTDIR/../doc/docchecker" gendoc.txt
python "$TESTDIR/../doc/runrst" html gendoc.txt /dev/null