update Spanish translation:

* manual/upgrading.xml.es, manual/vhosts/index.xml.es: sync with English version

* manual/logs.xml.es: new translation

Submitted by: Jesús Blanco <blanco bitrock.com>
Reviewed by: Daniel Lopez


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.0.x@151401 13f79535-47bb-0310-9956-ffa450edef68