Default values issues

[JohannesLorenz]

A list of things that has to be done on the default values branch:

• [x] Remove the TODO-default-values file in zyn
• [x] Finish the port checker per #34 . Especially, add a file to the instrumentes that uses all ports (if non already exists) and add this to the port checker's description
• [x] Move path-search to rtosc
• [x] Don't save ports to savefile if they have rProp(alias)
• [x] PAD synth is not saved. The reason: it depends on PADenable
• [x] EQ.cpp's filterports are missing default values
• [x] Scales for insefx and sysefx seem to differ => Patch Pvolume inside the effect classes
• [ ] For invalid options that are transmitted to option values, maybe check the broadcast values
• [ ] Use # for bundles, not a.
• [x] Tests for zyn effect's presets
• [x] rEnabled vs rExists: clarify/rename? Make a clean function?
• [ ] Fix all TODOs that arised in this branch
• [ ] Security:
  • [ ] Make buffer ovflows impossible in the pretty-scanner and the savefile reader (using safe integer structs and safe buffers)
  • [ ] Forbid blobs in savefiles
  • [ ] Pointers may only be passed in blobs (how to check this?). Reason: blobs are dangerous: parameter->subobject = *(SubObject**)message.blob_data with an invalid pointer