Revision 1730107

i126369 - Finish off hwpfilter

The Hangul Word Processor filter was disabled from OpenOffice in 
r1677190 due to security concerns. While some extra buffer controls
could  have been made and the filter restored, the truth is a much
bigger effort is required to catch up with this format. Files created
with later editions of Hangul, including Hangul Wordian, Hangul 2002,
Hangul 2005 and Hangul 2007 cannot be opened with the existing filter. 
Existing users can apparently download a free viewer and convert their
document to RTF or doc.

Drop completely the code. while here also drop remnants of wpd support
that we dropped since 3.4.1. Having less code is sometimes better.