graft: use a real conflict for the tests
One of the graft tests grafts a changeset that changes a file's
content from 'a' to 'b' onto a branch that has changed the file's
content from 'a', via 'b', and then back to 'a' again. To prepare for
not considering this a file in need of merging, let's use 'c' as the
file's new content to make sure it has to be considered
conflicting.
There's a second similar case further down where an ancestor is
grafted. Make sure that is also considered a conflict.
Mercurial
=========
Mercurial is a fast, easy to use, distributed revision control tool
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$ make install # do a system-wide install
$ hg debuginstall # sanity-check setup
$ hg # see help
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See http://mercurial.selenic.com/ for detailed installation
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