[Kst] Kst 2.0.0 rc1

[Peter Kümmel]

 >   -We have not worked out the treatment of absolute vs relative path
> names for data sources in kst files, though we have a preliminary plan
> in bugzilla.   This could effect what ends up in a kst file, and we
> want to make sure that a 2.0 kst file remains compatible with kst 2.13
> five years from now.

I've checked in a easy to change handling of relative file paths,

see bug https://bugs.kde.org/show_bug.cgi?id=221689 :

    - save absolute and relative path if possible
    - when loading try relative path for data sources first
    - fall back to absolute path if relative path does not exists

Peter