Some fixes for sign conversion warnings

[Achim Gratz]

…to help Gary out a bit.

http://repo.or.cz/ntpsec/local.git/patch/3c0c5eab251a1e25fad3c41b642d62a023d16514
http://repo.or.cz/ntpsec/local.git/patch/48cd3bbcfe3462b96f7adef5b135a56f790c3667
http://repo.or.cz/ntpsec/local.git/patch/615a498cbd4b2d108f818f738758499cbe392436


Regards,
Achim.
-- 
+<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+

Wavetables for the Waldorf Blofeld:
http://Synth.Stromeko.net/Downloads.html#BlofeldUserWavetables