Allow scmpuff_status to handle detached git states #24
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When rebasing a branch and stopping to resolve a conflict, or when
looking at a particular commit, git will be in a detached head state
with
git status -bz
returning something along the lines of## HEAD (no branch)UU file_with_conflicts.txt
This fixes the function that parses this output internally for
scmpuff_status to not bail out loudly, but rather pass the
HEAD (no branch)
state up.Fixes #18