additional object data can be added & receiverView and receiverUp removed

Updating DAFFv17 executable and metadata handling in itaHRTF to comply with current OpenDAFF HEAD revision source code

automatically determine clipping limits for NI hardware

Recompiled Version set as new default. Old Version kept as _legacy in case of errors with older systems.
Tested thus far with OSX 10.11 and 10.12 and Matlab 2017a and 2015aSP1.
In case of problems use the expert tab in ita_preferences and select the plazrec_legacy mex file 

Recompiled Version set as new default. Old Version kept as _legacy in case of errors with older systems.
Tested thus far with OSX 10.11 and 10.12 and Matlab 2017a and 2015aSP1.
In case of problems use the expert tab in ita_preferences and select the plazrec_legacy mex file 

keep channel names and units for all repetitions

automatically be identified as fftdegree or samples anymore in itaAudio