Late feature: AbiWord import filter

[Fridrich Strba]

Dearest developer community,

As discussed today at ESC, I will need 3 reviews for the AbiWord import
filter for 4-2 branch. As the translators have no problem with one
additional string, they suggested that 4-2-0 could go to. That is why I
submitted 2 patches to gerrit:

1) https://gerrit.libreoffice.org/7478 for 4-2, and
2) https://gerrit.libreoffice.org/7479 for 4-2-1

I would appreciate your review for both and if it is possible the sooner
the better.

Thanks for your good will

Fridrich