Configure for relative address
Fix memory access violation bug.

end() returned wrong too large address.
    buf_size_ is byte size
 != size_  is size of array
buffering data to reduce the number of property call.
Change to local variable for check additional interface.
Change library's directory
Enable destructer (Dispose)

It was disabled for debuging.
Use begin() and end() to obtain range of data.
Move implimentation of GetEnumerator to cpp file.
fix conflict name of 'end'
Add test of fft by impulse and its dummy method.

Implimentation is not yet.
Implimentation of fft() was done.

Test had a bug.
Implimenting iFFT
Add expanded fftw3 header file  to check the definition of functions.