conversion, also other smaller fixes of spelling, suggestion
and morphological analysis using recent Hunspell commits.

Several second or more freezing was occured with Hunspell
dictionaries with compound word handling, because of (1)
combinatorical explosion of overlapping word parts, or
(2) unlimited suggestion algorithms (for example MAP) and
(3) multiple suggestion search for a capitalized,
mixed case or abbreviated long word.

Change-Id: I73e196f907e9b73dcd981d275cedb33878a554f6
Reviewed-on: https://gerrit.libreoffice.org/55965
Tested-by: Jenkins
Reviewed-by: László Németh <nemeth@numbertext.org>