[libvoikko] --version flag for command line tools?

[Sjur Moshagen]

It would be nice to have a flag to query the version of the voikko command line tools, to document the version used in e.g. speller testing. The version string should contain both the version number of the tool itself and that of libvoikko, and perhaps also the svn revision number at compile time.

Documenting the version number of the tool used in speller/hyphenator/etc. testing is important, as is to also document the version/date of the lexicon being used.

Best,
Sjur