hgweb: fix handling of path for old style template - path from old style are prefixed by '/', make cleanpath strip them - make manifest() use relative paths, that was the only function using '/' prefixed paths

     1

#header#

     2

    <title>#repo|escape#: tags </title>

     3

    <description>#repo|escape# tag history</description>

     4

    #entriesnotip%tagentry#

     5

  </channel>

     6

</rss>