# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@logilab.fr>
# Date 1342542109 -7200
# Node ID e2a0422f00f7262b40ab112a6e850478264ac247
# Parent  738ad56dd8a61c9e65570a8c7341d30a07c70c28
checkheads: extract branchmap preprocessing

The checkheads function is far too complicated. This extract help to explicite
what part of the preprocessing are reused by the actual check.

This the first step toward a wider refactoring.