Command-line version only

This is the working windows version of the xcas/giac commandline.
It can run the following and much more:

libgiac 1.2.1
Copyright (C) 2001,2014 B. Parisse, Institut Fourier, 38402 St Martin d'Heres
License GNU GPLv3
>>> simplify(2*x+5*x)
7*x
>>> usimplify(1_kg*1_m/(1_s^2))
1.0_N
>>> for(x:=0;x<2;x++){if(x==0){print('hello');}else{print('world');}}
hello
world
0