Update Spanish translation

Translated by: Jesús Blanco <blanco bitrock.com>
Reviewed by: Daniel López

* docs/manual/mpm.xml.es

  Bring translation up to date
  
* manual/mpm.xml.meta
* manual/mpm.html.es

  Update transformation


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.0.x@161767 13f79535-47bb-0310-9956-ffa450edef68