The writerfilter module contains import filters for Writer, using its
UNO API.

- inc: global headers (can be included by other modules)
- prj: information for dmake
- qa: unittests and subsequenttests
- source: the filters themselves

  * dmapper: the domain mapper, hiding UNO from the tokenizers
  * doctok: incomplete ww8 (.doc) tokenizer
  * filter: the uno filter service implementations
  * ooxml: the docx tokenizer
  * rtftok: the rtf tokenizer