[REVIEW 3-5] fdo#45521 "most-annoying" .sdw bug

[Caolán McNamara]

some problems with .sdw documents, turns out that the binfilter import
depends on being able to use the ascii text exporter to generate
plain-text forms of some entries.

http://cgit.freedesktop.org/libreoffice/binfilter/commit/?id=cfa62900291dc2d89793044a045ac1f29ca8b128

patch is big, but just restores the ascii text exporter and the
implementation of SwXTextCursor::getTextFromPam

https://www.libreoffice.org/bugzilla/show_bug.cgi?id=45521

C.