Import o3read package from http://siag.nu/o3read/

Import o3read package from http://siag.nu/o3read/

o3read is a standalone converter for the OpenOffice.org swriter (*.sxw) and
scalc (*.sxc) formats. It doesn't depend on OpenOffice or any other external
tools or libraries.

Example: unzip -p filformat.sxw content.xml | o3read | utf8tolatin1

There are three output modules:

    * o3read displays a dump of the parse tree
    * o3totxt creates plain text
    * o3tohtml creates html code

The utility utf8tolatin1 converts from utf8 to 8859-1.