hgweb: change startup argument processing - allow passing a repo object instead of a path (if we get a string, we construct a repo object) - hg serve: pass options via repo.ui.setconfig - add --style option - get default name from repo.root rather than getcwd() - remove template argument to hgweb() - reduce create_server from 8 args to 1

#header#
    <title>#repo|escape#: #file# history</title>
    <description>#file# revision history</description>
    #entries%filelogentry#
  </channel>
</rss>