Log Message:
Update to 2.26.1. Set LICENSE to gnu-fdl-v1.1.

Version 2.26.1:
---------------
* Accessibility Guide:
  - Added more description for what caret navigation is (Willie Walker)
  - Fixed DocBook validity errors in translations (Claude Paroz)
  - Updated translations:
    de      (Simon Bienlein)
    es      (Jorge Gonzalez)
    ru      (Anatol Kamynin)
    sv      (Daniel Nylander)
* System Admin Guide:
  - Updated translations:
    el      (Jennie Petoumenou)
* User Guide:
  - Fixed DocBook validity errors (Claude Paroz)
  - Updated translations:
    cs      (Lucas Lommer)
    es      (Jorge Gonzalez)
    fr      (Bruno Brouard and Claude Paroz)
    sv      (Daniel Nylander)