Fixed return values of buffer functions.
Fixed cpxMul function.
Added convolution function prototypes.
Added callbacks for buffers, ringbuffers and LXC.
Added one and two channels convolution functions.
Added two channel convolution test.
Fixed false copy of imaginary part.
Added new variable TimeSize to fftwfHandle.
Added LXCHandle destroy functionality.
Added get buffers/ringbuffers functionality.
Added new variables to fftHandles.
ftmc copy old samples to the buffer beginning.
Corrected get fftCallbacks.
Corrected get NativeCallbacks.