mergetools.hgrc: add vimdiff
Imported from deb_specific__mergetools patch in Debians patch queue:
http://svn.debian.org/viewsvn/python-apps/packages/mercurial/trunk/debian/patches/
#!/bin/sh
hg init a
cd a
mkdir a
echo a > a/b
hg ci -Am m
hg rm a
hg ci -m m a
mkdir a b
echo a > a/b
hg ci -Am m
hg rm a
cd b
# relative delete
hg ci -m m ../a