writerfilter: clean up useless debug output in ooxmltok

OOXMLFastDocumentHandler::createFastChildContext() is called for the
streams we expect, no need to unconditionally produce output there.

Change-Id: I164b3c4dc6f2294487e1b1283266957d8f24cbbb
DOCX import: handle <w:autoHyphenation/>

It's the OOXML equivalent of the fAutoHyphen DOP flag from [MS-DOC].

Change-Id: Iae66dcd0d350ce4ebee3c3493ee07eff0d9a5e1d
DOCX export: handle <w:autoHyphenation/>

Change-Id: Ie4bb2b3bf7d2df58c30a54ded68f7b932c2111ed