next-prev: always respect the --merge flag
An earlier bug fix series which started respecting commands.update.check
introduced a bug in which --merge was not respected sometimes. This patch fixes
that behavior by passing updatecheck as 'none' to hg.updatetotally() if --merge
is passed which is similar to what `hg update` does.
mkdir -p html
cp index.html html/
cp *.css html/
cp *.js html/
cp -R img html/
cp -R graphviz-images/ html/
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