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.
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<p class="p1"><b>Before you install</b></p>
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<p class="p3">This is an OS X 10.6 version of Mercurial that depends on the default Python 2.6 installation.</p>
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<p class="p3">This package installs the <span class="s2">hg</span> executable in <span class="s2">/usr/local/bin</span> and the Mercurial files in <span class="s2">/Library/Python/2.6/site-packages/mercurial.</span></p>
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<p class="p1"><b>Documentation</b></p>
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<p class="p3">Visit the <a href="http://mercurial.selenic.com/">Mercurial web site and wiki</a></p>
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<p class="p3">There's also a free book, <a href="http://hgbook.red-bean.com/">Distributed revision control with Mercurial</a></p>
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