Fix file-changed-to-dir and dir-to-file commits (issue660).
Allow adding to dirstate files that clash with previously existing
but marked for removal. Protect from reintroducing clashes by revert.
This change doesn't address related issues with update. Current
workaround is to do "clean" update by manually removing conflicting
files/dirs from working directory.
#!/bin/sh
# Test issue 746: renaming files brought by the
# second parent of a merge was broken.
echo % create source repository
hg init t
cd t
echo a > a
hg ci -Am a
cd ..
echo % fork source repository
hg clone t t2
cd t2
echo b > b
hg ci -Am b
echo % update source repository
cd ../t
echo a >> a
hg ci -m a2
echo % merge repositories
hg pull ../t2
hg merge
echo % rename b as c
hg mv b c
hg st
echo % rename back c as b
hg mv c b
hg st