Add macro support to transformAnchors

gistfile1.py

    # expand anchor 'macros'
    for anchor in anchors[:]:
        if 'url#' in anchor:
            anchors.remove(anchor)
            urlprefix = anchor['url#']
            del anchor['url#']
            linkingText = anchor.get('linkingText')
            if isinstance(linkingText, list):
                for link in linkingText:
                    anchor['linkingText'] = link
                    anchor['url'] = urlprefix + simplifyText(link)
                    anchors.append(anchor.copy())
            elif isinstance(linkingText, dict):
                for text, link in linkingText.iteritems():
                    anchor['linkingText'] = text
                    anchor['url'] = urlprefix + link
                    anchors.append(anchor.copy())
            elif isinstance(linkingText, basestring):
                anchor['linkingText'] = linkingText
                anchor['url'] = urlprefix + simplifyText(linkingText)
                anchors.append(anchor.copy())