When saving or restoring settings, prefer chunks over parameters.
This fixes some problems with plugins which get confused e.g. if you
restore individual parameters rather than the whole chunk.
Signed-off-by: Tobias Doerffel <tobias.doerffel@gmail.com>
Some VST plugins save their state as chunks rather than parameters.
According code to save/restore those chunks has been taken from FST 1.9.
However restore currently is disabled as it mostly fails for whatever
reason.
Up to now changes of samplerate or tempo only have been tracked by the
VeSTige plugin while e.g. the VstEffect didn't forward such changes to the
RemotePlugin. Moving according code from VeSTige to VstPlugin base class
fixes this issue.
