Provides a count of the number of backlinks to a page.

Parameters:
  db          - The name of the database.
                Examples: frwiki for the French Wikipedia, 
                          jawiktionary for Japanese Wiktionary
                Default: enwiki
  callback    - If specified, wraps the output into a given function call and changes Content-Type to application/json for script use.
  filterredir - How to filter for redirects
                One value: all, redirects, nonredirects
                Default: all
  ns          - The assumed namespace of the page
                Default: 0
  title       - Title to search.

Examples:
  http://toolserver.org/~dispenser/cgi-bin/backlinkscount.py?title=User:Jimbo%20Wales
  http://toolserver.org/~dispenser/cgi-bin/backlinkscount.py?title=Jimbo_Wales&ns=2&callback=bragging_rights&filterredir=nonredirects&db=enwiki

Notes:
* The "What links here" page combines the results of both backlinks and embeddedin (transclusions).
* For transclusions count use embeddedincount.py tool.
* This tool does not support namespace localization, use English namespaces or the ns parameter instead.
* Source code is at http://toolserver.org/~dispenser/sources/backlinkscount.py