fdo#80403: Writer specific AutoCorr use FastParser

Contextclasses implement XFastContextHandler
Importclasses implement XFastDocumentHandler
Tokens for BlockList.xml are defined in BlockListTokens.txt
Tokens for content.xml are defined in TextBlockTokens.txt
A perfect hash table is generated with gperf and used by the tokenhandlers

Change-Id: Iff8ad5f1a4df0b808ee6fdf13f75a821596e9ee9
Reviewed-on: https://gerrit.libreoffice.org/12386
Reviewed-by: Michael Meeks <michael.meeks@collabora.com>
Tested-by: Michael Meeks <michael.meeks@collabora.com>