archive: cleanup of mirrored data

Hi,

our archive is nearly full.

To be able to archive further data on openoffice.org's archive mirrors I 
have to remove

../openoffice-archive/extended
../openoffice-archive/helpcontent
../openoffice-archive/contrib

and

../openoffice-archive/localized/ (all 1.x versions)

For those who need access to a 1.x version I'll leave the en-US version 
in ../openoffice-archive/stable

Due to missing disk space on archive mirrors to archive 3.2.1 during the 
3.3.0 release it might be possible that I have to remove 2.x versions 
from ../openoffice-archive/localized/ as well but I will post a separate 
message when it's really needed.

Kind regards, Joost