Applies shell globbing to a set of directories and returns
    the expanded paths

def _expand_glob_path(file_roots):
    '''
    Applies shell globbing to a set of directories and returns
    the expanded paths
    '''
    unglobbed_path = []
    for path in file_roots:
        try:
            if glob.has_magic(path):
                unglobbed_path.extend(glob.glob(path))
            else:
                unglobbed_path.append(path)
        except Exception:
            unglobbed_path.append(path)
    return unglobbed_path